packaging: engine-setup - add firewalld support

Add firewalld support for ovirt-engine-setup.
If the user will ask setup to handle firewalld, the setup will open
needed ports (JBoss ports + NFS) in all firewalld zones.

Change-Id: Ieea93c90ffb90e02b880949a67575495aac5a472
Signed-off-by: Ofer Schreiber <oschreib@redhat.com>