Bug 1081249 - Synchronize access to selinux matchpath context

* Initialize context in mcollective agent to improve performance
Bug 1081249 - Synchronize access to selinux matchpath context

* Fix unit tests
Bug 1081441 - unprivileged_unidle not updating idler.txt
Merge pull request #5101 from jwhonce/to_stage

Merged by openshift-bot