packaging: added snapshot release rpms

- added snapshot rpm for 3.4 and 3.5
- added initial master rpm

Change-Id: I0ac9ff1c0ce204ed9578114d5b0a4281a6c696ce
Ticket: https://fedorahosted.org/ovirt/ticket/217
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>