Upgrade distros to ensure all packages are the latest

Without this we are seeing elements fall behind, such as the new SSL changes
to the EPEL mirror which are no longer compatible with the SSL setup on older
RHEL6/7 boxes.

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #1123 from kbarber/maint/stable/upgrade-test-distros

Upgrade distros to ensure all packages are the latest