Stop a matrix-project build

Added more diagnositics about how ping terminated a connection.

cloud.

- calling prebuild after build wrappers to align the semantics with freestyle projects.

build.xml that can't be deserialized

Handle resolves-to="com.google.common.collect.ImmutableList$SerializedForm"
manually and construct a suitable list. Any subsequent serialization of the
class will use the direct form of serialization.

This is a partial fix for JENKINS-10903. Any new builds will
be serialized correctly.

Based on ImmutableMapConverter.java

This reverts commit 5dce36d9
and it adds back xalan as test harness dependency

This was causing ui-samples test failure

java.lang.NoClassDefFoundError: org/apache/xml/utils/PrefixResolver
    at com.gargoylesoftware.htmlunit.html.DomNamespaceNode.getLocalName(DomNamespaceNode.java:81)
    at com.gargoylesoftware.htmlunit.html.HtmlElement.getNodeName(HtmlElement.java:308)
    at com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.addNodeToRightParent(HTMLParser.java:636)
    at com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.startElement(HTMLParser.java:610)
    at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
    at org.cyberneko.html.HTMLTagBalancer.callStartElement(HTMLTagBalancer.java:1126)
    at org.cyberneko.html.HTMLTagBalancer.startElement(HTMLTagBalancer.java:734)
    at org.cyberneko.html.HTMLTagBalancer.forceStartElement(HTMLTagBalancer.java:758)
    at org.cyberneko.html.HTMLTagBalancer.startElement(HTMLTagBalancer.java:618)
    at org.cyberneko.html.HTMLTagBalancer.forceStartElement(HTMLTagBalancer.java:758)
    at org.cyberneko.html.HTMLTagBalancer.startElement(HTMLTagBalancer.java:586)
    at org.cyberneko.html.HTMLTagBalancer.forceStartElement(HTMLTagBalancer.java:758)
    at org.cyberneko.html.HTMLTagBalancer.forceStartBody(HTMLTagBalancer.java:828)
    at org.cyberneko.html.HTMLTagBalancer.endDocument(HTMLTagBalancer.java:468)
    at org.cyberneko.html.filters.DefaultFilter.endDocument(DefaultFilter.java:213)
    at org.cyberneko.html.HTMLScanner$ContentScanner.scan(HTMLScanner.java:2064)
    at org.cyberneko.html.HTMLScanner.scanDocument(HTMLScanner.java:907)
    at org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:499)
    at org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:452)
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
    at com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.parse(HTMLParser.java:901)
    at com.gargoylesoftware.htmlunit.html.HTMLParser.parse(HTMLParser.java:350)
    at com.gargoylesoftware.htmlunit.html.HTMLParser.parseHtml(HTMLParser.java:304)
    at com.gargoylesoftware.htmlunit.DefaultPageCreator.createHtmlPage(DefaultPageCreator.java:134)
    at com.gargoylesoftware.htmlunit.DefaultPageCreator.createPage(DefaultPageCreator.java:101)
    at org.jvnet.hudson.test.HudsonPageCreator.createPage(HudsonPageCreator.java:46)
    at com.gargoylesoftware.htmlunit.WebClient.loadWebResponseInto(WebClient.java:449)
    at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:332)
    at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:389)
    at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:374)
    at org.jvnet.hudson.test.HudsonTestCase$WebClient.getPage(HudsonTestCase.java:1717)
    at org.jvnet.hudson.test.HudsonTestCase.tearDown(HudsonTestCase.java:349)
    at org.jvnet.hudson.test.JellyTestSuiteBuilder$JellyTestSuite.tearDown(JellyTestSuiteBuilder.java:138)
    at org.jvnet.hudson.test.junit.GroupedTest.run(GroupedTest.java:50)
    at junit.framework.TestSuite.runTest(TestSuite.java:208)
    at junit.framework.TestSuite.run(TestSuite.java:203)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.maven.surefire.junit.JUnitTestSet.execute(JUnitTestSet.java:97)
    at org.apache.maven.surefire.junit.JUnit3Provider.executeTestSet(JUnit3Provider.java:108)
    at org.apache.maven.surefire.junit.JUnit3Provider.invoke(JUnit3Provider.java:85)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.maven.surefire.booter.ProviderFactory$ClassLoaderProxy.invoke(ProviderFactory.java:103)
    at $Proxy0.invoke(Unknown Source)
    at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:150)
    at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcess(SurefireStarter.java:91)
    at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:69)
Caused by: java.lang.ClassNotFoundException: org.apache.xml.utils.PrefixResolver
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    ... 52 more
Caused by: java.lang.ClassNotFoundException: org.apache.xml.utils.PrefixResolver
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    ... 52 more

In event-debug.js, there's an overloaded toString() method.

    toString: function() {
         return "CustomEvent: " + "'" + this.type  + "', " +
             "context: " + this.scope;

    }

When the problem happens, "this.scope" points to a DataSourceBase object, and apparently at that time this._sName is null, and it causes a failure in ScriptableObject.getDefaultValue(), at the final "fall through to error" portion (see below)

----
Enclosed exception:
net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError: Cannot find default value for object. (http://localhost:46994/static/43c91e29/scripts/yui/event/event-debug.js#385)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3652)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3630)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3658)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError1(ScriptRuntime.java:3670)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.getDefaultValue(ScriptableObject.java:829)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.getDefaultValue(ScriptableObject.java:748)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.add(ScriptRuntime.java:2558)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.do_add(Interpreter.java:3060)
	at script.(http://localhost:46994/static/43c91e29/scripts/yui/event/event-debug.js:385)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:879)
	at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:164)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.getDefaultValue(ScriptableObject.java:808)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.getDefaultValue(ScriptableObject.java:748)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.add(ScriptRuntime.java:2558)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.do_add(Interpreter.java:3060)
	at script.(http://localhost:46994/static/43c91e29/scripts/yui/event/event-debug.js:114)
	at script.(http://localhost:46994/static/43c91e29/scripts/yui/event/event-debug.js:2258)
	at script.(http://localhost:46994/static/43c91e29/scripts/yui/datasource/datasource-debug.js:79)
	at script.(http://localhost:46994/static/43c91e29/scripts/yui/datasource/datasource-debug.js:2302)
	at script.(http://localhost:46994/static/43c91e29/scripts/yui/autocomplete/autocomplete-debug.js:18)
	at script.createSearchBox(http://localhost:46994/static/43c91e29/scripts/hudson-behavior.js:1711)
	at script.(script in http://localhost:46994//login from (4, 3626) to (4, 3663):4)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:879)
	at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:164)
	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:427)
	at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:263)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3058)
	at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.exec(InterpretedFunction.java:175)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$5.doRun(JavaScriptEngine.java:415)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:522)
	at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:529)
	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:536)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:424)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:399)
	at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptIfPossible(HtmlPage.java:892)
	at com.gargoylesoftware.htmlunit.html.HtmlScript.executeInlineScriptIfNeeded(HtmlScript.java:309)
	at com.gargoylesoftware.htmlunit.html.HtmlScript.executeScriptIfNeeded(HtmlScript.java:364)
	at com.gargoylesoftware.htmlunit.html.HtmlScript$1.execute(HtmlScript.java:223)
	at com.gargoylesoftware.htmlunit.html.HtmlScript.onAllChildrenAddedToPage(HtmlScript.java:238)
----

So this quick fix gets us around.

I think the root cause of the problem is that ScriptableObject.getDefaultValue() should treat null as the primitive value, but I'm bit scared to make that change right now.

Fixed the test failure. There's no beta module in YUI 2.9, and we got some old plugins that's specifying beta for modules that have graduated.