Merge pull request #1 from eucalyptus/master

Where does this pull request go? :)
Change EPEL source to definitive mirror

One-off yum EPEL repos are more likely to break, and if they do, the resulting timeout will break your Jenkins install.  Changing to the definitive location for EPEL mirror management.
Merge pull request #31 from gregdek/master

Change EPEL repo