There are three repositories for liberty in entreprise
linux:
- delorean
- delorean-liberty-testing
- delorean-common-testing

This commit adds the two missing ones so that delorean
can pull the proper dependencies. Otherwise, it might
have either broken dependencies or outdated ones from EPEL.

Change-Id: Ia815b38d3a83a89c582ea874e39c170d618b99e5
Closes-Bug: #1497436