Bumping Jenkins version to avaid maven compilation failures with JDK7
Bumping Jenkins version to avaid maven compilation failures with JDK7

KostyaSha/ws-cleanup-plugin,jalios/ws-cleanup-plugin,vjuranek/ws-cleanup,KostyaSha/ws-cleanup-plugin,vjuranek/ws-cleanup,jenkinsci/ws-cleanup-plugin,jenkinsci/ws-cleanup-plugin,jalios/ws-cleanup-plugin