packaging: setup: sanlock lockspace init

Added sanlock lockspace initialization.
Code adapted from
http://gerrit.ovirt.org/#/c/17609/1/ovirt_hosted_engine_ha/agent/hosted_engine.py
Requiring sanlock >= 2.8

Change-Id: Ife56590bf3e6c17368a24ef8e9af6d42adc5ea42
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>