Implement a logic of recovery finishing

The key point of local state recovery is catching of latest revision applied in metastorage to apply it locally. In case of standalone mode the node should finish recovery after restoring components' state from vault, otherwise it should retrieve updates from metastorage. Notifications from metastorage should be allowed on recovery stage after all components have started, and recovery should continue until the node has reached minimal acceptable difference between itself and the cluster.
Need to implement:

• methods for getting the minimal available revision in Metastorage and the last applied one;
• some recovery processor class intended to do the logic related to catching last metastorage revision, and responsile for firing FinishedRecovery message to cluster management group.