The EPEL repos provide many extra rpms not available from
CentOS, but known to be compatible with CentOS.
We have historically used a few rpms out of EPEL-7.
No doubt we will eventually want a few rpms from EPEL-8
to replace those originating from EPEL-7.
Change-Id: If7b3e8cffa8134e4aa6d469dd495655312516119
Signed-off-by: Scott Little <scott.little@windriver.com>