Draft implementation of the ownership TokenMacro

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Implemented token macros, migrated to latest Jenkins version for testing

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Added check of the null parameter value

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Added TODO, ready to merge
Resolves https://issues.jenkins-ci.org/browse/JENKINS-19498

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Reverted version requirements to 1.509.2

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Merge branch 'master' into token-macro-support

Conflicts:
	pom.xml

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Removed unsupported links

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Removed unused imports

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Minor appearance improvements

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>