totemiba: Add multicast recovery

Totemiba wasn't able to survive SubnetManager handover or
restart. If SM was migrated to another node, corosync logged
"multicast error" and losses connectivity.

Commit should solve this situation.

Signed-off-by: Yevheniy Demchenko <zheka@uvt.cz>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>