packaging: setup: use offline packager

hosted-engine --deploy doesn't need the package manager
for performing the deployment.
Avoiding to hold the yum lock and to require internet
connection during the process.

Change-Id: Ie004dd7a055a2a68f0bac8dd628a0e5e242ebc96
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>