[FIXED JENKINS-17276]

Noting the fix.
Merge commit '9d8ee80' into rc
[maven-release-plugin] prepare release jenkins-1.519
[maven-release-plugin] prepare for next development iteration
updated changelog for release
[JENKINS-18381] Provide a mechanism to differentiate between node
properties that are applicable to the master node only and node properties
that can be applied to all nodes
Better pronoun for job types
updated changelog for release
updated changelog for release
updated changelog as a part of the release
merged back the RC branch
this wasn't treating false as false
[FIXED JENKINS-17713 JENKINS-14362]

Integrated the new version of Stapler that fixes them.
Merge remote-tracking branch 'upstream/master'