Check whether Repository URL is specified or not when artifacts deplyed....

Check whether Repository URL is specified or not when artifacts deplyed. (http://hudson.361315.n4.nabble.com/Google-code-post-commit-tc2530609.html)

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@35120 71c3de6d-444a-0410-be80-ed276b4c234a