Bug 971120: refactor openshift-node.feature
Bug 986838 - Prevent quotas from being lowered beyond usage

* Add validation and tests
Merge pull request #3246 from pmorie/bugs/971120

Merged by openshift-bot
Merge pull request #3191 from jwhonce/bug/986838

Merged by openshift-bot
Remove old logic from oo-admin-upgrade
Admin script cleanup