Update VERSION and XOS parent container

Change-Id: Id3e09b75ccd3969000bc45a2add23ce61171c576
diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index 54283a7..d4cd969 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -1,5 +1,20 @@
+# Copyright 2018-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # xosproject/epc-service-synchronizer
-FROM xosproject/xos-synchronizer-base:2.0.0
+
+FROM xosproject/xos-synchronizer-base:2.1.9
 
 COPY xos/synchronizer /opt/xos/synchronizers/epc-service
 COPY VERSION /opt/xos/synchronizers/epc-service/