[fixed JENKINS-18393] Do not list any ItemGroup in list-jobs CLI command

List item group recursively.
Add @Bug(18393) annotation
Merge branch 'master' into jenkins18393
Merge branch 'master' into jenkins18393
Merge pull request #823 from olivergondza/jenkins18393

[FIXED JENKINS-18393] Do not list any ItemGroup in list-jobs CLI command