Card origin_node_401 - Support Vendor in CartridgeRepository

* Allow vendored cartridges to have the same name
* Update usages of CartridgeRepository
Card origin_node_401 - Support Vendor in CartridgeRepository

* Updates from reviews
Bug 1119609 - Support vendor in oo-admin-cartridge
Bug 1120463 - Update man pages
Merge pull request #5634 from jwhonce/origin_node_401

Merged by openshift-bot
Automatic commit of package [rubygem-openshift-origin-node] release [1.28.2-1].
Automatic commit of package [openshift-origin-cartridge-haproxy] release [1.26.2-1].
Automatic commit of package [openshift-origin-cartridge-postgresql] release [1.27.2-1].
Automatic commit of package [openshift-origin-msg-common] release [1.20.2-1].
Automatic commit of package [openshift-origin-msg-node-mcollective] release [1.25.2-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.28.2-1].
Automatic commit of package [rubygem-openshift-origin-common] release [1.27.2-1].
Automatic commit of package [openshift-origin-node-util] release [1.27.2-1].