CORD-160 Add connect and disconnect methods to ovsdb

Change-Id: I66e777f8ec9c5834e27b1dc685fdeb197e30ce0d
diff --git a/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/OvsdbControllerImpl.java b/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/OvsdbControllerImpl.java
index 9b48296..beeaa9c 100644
--- a/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/OvsdbControllerImpl.java
+++ b/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/OvsdbControllerImpl.java
@@ -33,6 +33,7 @@
 import org.apache.felix.scr.annotations.Service;
 import org.onlab.packet.IpAddress;
 import org.onlab.packet.MacAddress;
+import org.onlab.packet.TpPort;
 import org.onosproject.ovsdb.controller.DefaultEventSubject;
 import org.onosproject.ovsdb.controller.EventSubject;
 import org.onosproject.ovsdb.controller.OvsdbClientService;
@@ -142,6 +143,11 @@
         return ovsdbClients.get(nodeId);
     }
 
+    @Override
+    public void connect(IpAddress ip, TpPort port) {
+        controller.connect(ip, port);
+    }
+
     /**
      * Implementation of an Ovsdb Agent which is responsible for keeping track
      * of connected node and the state in which they are.