Fix installation of required packages for F19.
- Install F19 rubygems instead of ruby193 ones
Merge pull request #72 from kraman/f19_fixes

Merged by openshift-bot
Updating VM image build files
Add admin-console to exclude list since f19 and rhel are missing required gems.
Clear cache when retrying tests to avoid any errors related to stale cache data.
Merge pull request #73 from kraman/master

Merged by openshift-bot