packaging: setup: configure libvirt before running vdsmd

Bug-Url: https://bugzilla.redhat.com/1025350
Change-Id: Ie1fa427b7dacd8ed3fb6c2f059d426f9368c1d3d
Signed-off-by: Yedidyah Bar David <didi@redhat.com>
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>