[VOL-1505]  This update enables the core to add a key when
publishing an event onto kafka.   The corresponding update is
done in the adapter GO components.   Similar changes remain to
be done in pyvoltha.

Change-Id: I0bb1e3cb8c2fa9e0214f96d863819755d34a0bb9
diff --git a/db/kvstore/consulclient.go b/db/kvstore/consulclient.go
index a5c71ac..738ca92 100644
--- a/db/kvstore/consulclient.go
+++ b/db/kvstore/consulclient.go
@@ -497,3 +497,12 @@
 		log.Errorw("error-closing-client", log.Fields{"error": err})
 	}
 }
+
+
+func (c *ConsulClient)  AcquireLock(lockName string, timeout int) error {
+	return nil
+}
+
+func (c *ConsulClient)  ReleaseLock(lockName string) error {
+	return nil
+}
\ No newline at end of file