Adapting for fc21 slaves

There's no ordereddict on fc21, comes with python stdlib.
Java 1.8.0 comes by default, no 7 available on the repos.
Missing jasperreports-server from our repos, but we have to build it prior to
having it (and we need the slaves xd for that).

Change-Id: I1815e7c57b462b490121b012604e93c375c7818e
Signed-off-by: David Caro <dcaroest@redhat.com>