Bug 995233 - Use oo_spawn in place of systemu

* Clean up quota interface to return results as hash
Merge pull request #3321 from jwhonce/bug/995233

Merged by openshift-bot
Ensure boosted gears are not throttled
Automatic commit of package [rubygem-openshift-origin-node] release [1.13.2-1].
Automatic commit of package [openshift-origin-broker-util] release [1.13.2-1].
Automatic commit of package [openshift-origin-node-util] release [1.13.2-1].
Automatic commit of package [openshift-origin-msg-node-mcollective] release [1.13.2-1].
Automatic commit of package [openshift-origin-cartridge-jenkins] release [1.13.2-1].
Merge pull request #3328 from fotioslindiakos/Bug995550

Merged by openshift-bot
Bug 957442
Merge pull request #3330 from danmcp/master

Merged by openshift-bot
oo-diagnostics: test_node_containerization_plugin

Add the test_node_containerization_plugin test to ensure that
OPENSHIFT_NODE_PLUGINS in /etc/openshift/node.conf does not include
unix_user_observer.