profile: Test profile decorator format

The option to set profile format using a profile decorator was not
tested. Lets test it before we add new options to this decorator.

Change-Id: I6564002efd6ea5dbd2e643623f84e4e5030df48a
Signed-off-by: Nir Soffer <nsoffer@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/27786
Reviewed-by: Francesco Romani <fromani@redhat.com>
Reviewed-by: Saggi Mizrahi <smizrahi@redhat.com>