hooks: Add 02-sanlock-check into on-boot

Add 02-sanlock-check into on-boot to create sanlock user/group ifmissing
during upgrade.

Change-Id: I63101a8811978afe33b4152335e62bf5c3b54e00
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1127122
Signed-off-by: hadong <hadong@redhat.com>