<openshift.sh> fix scl yum repo priority
Merge pull request #351 from detiber/rhscl-1.1-fix

Rhscl 1.1 fix
Add upgrade script for ruby cartridge for rhscl-1.1
Merge pull request #363 from detiber/rhscl_1_1-ruby-upgrade

Add upgrade script for ruby cartridge for rhscl-1.1