Add example metrics handler

This is a sample framework for a metrics handler that can receive
metrics messages forwarded from Rsyslog and send them to 1 or more
destinations, such as Graphite.
Add ose-2.1 to builds
<oo-install>Update package task for overriding URL

Add a test for APP_URL env variable, and replace install.openshift.com
links with the value of APP_URL.
New ruby 1.8 bundle created
vendored gem changes for 2.0
Fix run from source commands
Merge pull request #330 from detiber/oo-qa-master

Support for non-prod packaging of oo-install
Merge pull request #328 from ncdc/metrics

Add sample metrics handler