Fix bug 915502

Only set RestCartridge.scales_with if a scaling cart is found.
Automatic commit of package [openshift-origin-broker-util] release [1.5.5-1].
Automatic commit of package [openshift-origin-node-proxy] release [0.6.4-1].
Automatic commit of package [rubygem-openshift-origin-msg-broker-mcollective] release [1.5.5-1].
Automatic commit of package [openshift-origin-cartridge-mysql-5.1] release [1.5.4-1].
Automatic commit of package [rubygem-openshift-origin-node] release [1.5.6-1].
Automatic commit of package [openshift-origin-cartridge-haproxy-1.4] release [1.5.4-1].
Automatic commit of package [openshift-origin-msg-node-mcollective] release [1.5.5-1].
Automatic commit of package [rubygem-openshift-origin-auth-remote-user] release [1.5.5-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.5.7-1].
Automatic commit of package [rubygem-openshift-origin-console] release [1.5.7-1].
Merge pull request #1451 from pmorie/bugs/915502

Merged by openshift-bot
Bug 914639
Bug 895507
Merge pull request #1452 from danmcp/master

Bug 914639
Documentation
<oo-diagnostics> add selinux enforcing check; fix small bug in cache test
Merge pull request #1454 from bdecoste/master

Merged by openshift-bot
avoiding unnecessary mongo queries and fixing routes constraints
Fix X-Client-IP.