Galera ocf agent fail fast if sync fails during promote

Issue

There are scenarios where a galera instance times out during the promote operation when we could potentially detect that the promote is going to fail much earlier. The galera agent's promote action involves syncing the local galera state with a donor node somewhere else in the cluster. If that sync fails to initialize, it should be able to fail the promote early rather than waiting the full duration of the promote timeout (which can be serveral minutes).