oo-diagnostics: Fix test_node_mco_log when no log

Make test_node_mco_log fail gracefully when the node mcollective log file
is absent.  Before this commit, the test would hang because it would run
a sed command with no input file provided.

This commit fixes bug 1077664.
oo-diagnostics: Fix comments for test_node_mco_log

Place comments with relevant code, consistently use proper case and
punctuation, and use whitespace for better logical grouping.
Bug 1095186 - corrected args passed to district
Update Vagrant guide w/ info on plugin gem
Merge pull request #5391 from lnader/master

Merged by openshift-bot
Fix idler cucumber tests
Merge pull request #5393 from nhr/vagrant_doc_update

Merged by openshift-bot
Merge pull request #5396 from ironcladlou/scalable-unidling

Merged by openshift-bot
Automatic commit of package [openshift-origin-cartridge-jbosseap] release [2.17.6-1].
Automatic commit of package [openshift-origin-cartridge-jbossews] release [1.23.3-1].
Automatic commit of package [openshift-origin-cartridge-postgresql] release [1.24.5-1].
Automatic commit of package [openshift-origin-cartridge-jenkins] release [1.21.4-1].
Automatic commit of package [openshift-origin-cartridge-mysql] release [1.24.4-1].
Automatic commit of package [rubygem-openshift-origin-msg-broker-mcollective] release [1.24.4-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.24.9-1].
Automatic commit of package [rubygem-openshift-origin-console] release [1.24.5-1].
Automatic commit of package [openshift-origin-cartridge-jbossas] release [1.24.6-1].
Automatic commit of package [openshift-origin-cartridge-dependencies] release [1.24.4-1].
Automatic commit of package [openshift-origin-cartridge-ruby] release [1.24.3-1].
bump_minor_versions for sprint 45