Allow Replication to be Enabled on Virtual Cluster

- Allow replication port assignment per NC.
- Allow replication to be enabled on virtual cluster.
- Wait for JOB_ABORT ACK from remote replicas.
- Fix LSM component mask file name.
- Fix index directory deletion on index drop.
- Eliminate multiple partition takeover requests.
- Free LogFlusher thread from sending replication ACKs.
- Fix possible deadlock between LogFlusher and Logs Replication Thread.
- Remove wait for FLUSH_LOG for replicated LSM components:
  This wait is not needed since on node failure, complete remote recovery is done.

Change-Id: I34a38f59c4915a19242adb6a4eaa6ee1c82d2372
Reviewed-on: https://asterix-gerrit.ics.uci.edu/743
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ian Maxon <imaxon@apache.org>
diff --git a/asterix-common/src/main/resources/schema/cluster.xsd b/asterix-common/src/main/resources/schema/cluster.xsd
index 935d33f..ae09b16 100644
--- a/asterix-common/src/main/resources/schema/cluster.xsd
+++ b/asterix-common/src/main/resources/schema/cluster.xsd
@@ -123,6 +123,7 @@
 				<xs:element ref="cl:txn_log_dir" minOccurs="0" />
 				<xs:element ref="cl:iodevices" minOccurs="0" />
 				<xs:element ref="cl:debug_port" minOccurs="0" />
+				<xs:element ref="cl:replication_port" minOccurs="0" />
 			</xs:sequence>
 		</xs:complexType>
 	</xs:element>