[FIXED JENKINS-20213,JENKINS-20181] - Fixed handling of ownership info in Matrix Configurations
All access to ownership data now goes through JobOwnerHelper.

Resolves: https://issues.jenkins-ci.org/browse/JENKINS-20213
Resolves: https://issues.jenkins-ci.org/browse/JENKINS-19993

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
[JENKINS-20253] - "Manage Ownership" action is not available for Matrix Configurations.
Disabled the feature in OwnershipActionFactory.

Resolves https://issues.jenkins-ci.org/browse/JENKINS-20253

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
[FIXED JENKINS-19993] - Ownership does not saves default security on reconfiguration
Now modification methods check for existence of security.

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Merge branch 'jenkins-19993-fix'

Conflicts:
	src/main/java/com/synopsys/arc/jenkins/plugins/ownership/jobs/OwnershipActionFactory.java

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
The next version is 0.3.1

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
[maven-release-plugin] prepare release ownership-0.3.1
[maven-release-plugin] prepare for next development iteration