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/OvsdbJsonRpcHandler.java b/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/OvsdbJsonRpcHandler.java
index 37942c2..1956a1e 100644
--- a/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/OvsdbJsonRpcHandler.java
+++ b/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/OvsdbJsonRpcHandler.java
@@ -89,7 +89,7 @@
      */
     private void processOvsdbMessage(JsonNode jsonNode) {
 
-        log.info("Handle ovsdb message");
+        log.debug("Handle ovsdb message");
 
         if (jsonNode.has("result")) {