[JENKINS-43713] Integrate Winstone 4 (Jetty 9.4.5) (#2850)

* use snapshot of winstone with new jetty 9.4.x version

Signed-off-by: olivier lamy <olamy@apache.org>

* add jetty snapshot repository until last jetty release deployed

Signed-off-by: olivier lamy <olamy@apache.org>

* surefire 2.20

Signed-off-by: olivier lamy <olamy@apache.org>

* winstone will be 4.0

Signed-off-by: olivier lamy <olamy@apache.org>

* remove jetty snapshot repo

Signed-off-by: olivier lamy <olamy@apache.org>

* touch to force pr rebuild as snapshot has been deployed

Signed-off-by: olivier lamy <olamy@apache.org>

* use winstone release

Signed-off-by: olivier lamy <olamy@apache.org>

* use maven-jenkins-dev-plugin 9.4.5.v20170502-jenkins-1

Signed-off-by: olivier lamy <olamy@apache.org>