SEBA-457 Upgrade to xos-core 2.2.5

Change-Id: I3871538dd47c94ce6e188d7be0ea3dad710904c0
diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index fd58002..456c595 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -16,7 +16,7 @@
 
 # xosproject/volt-synchronizer
 
-FROM xosproject/xos-synchronizer-base:2.2.1
+FROM xosproject/xos-synchronizer-base:2.2.5
 
 COPY xos/synchronizer /opt/xos/synchronizers/volt
 COPY VERSION /opt/xos/synchronizers/volt/
diff --git a/xos/synchronizer/migrations/0003_auto_20190301_1921.py b/xos/synchronizer/migrations/0003_auto_20190301_1921.py
new file mode 100644
index 0000000..8607619
--- /dev/null
+++ b/xos/synchronizer/migrations/0003_auto_20190301_1921.py
@@ -0,0 +1,34 @@
+# Copyright 2017-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.
+
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.11 on 2019-03-02 00:21
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('volt', '0002_auto_20190301_1920'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='voltservice_decl',
+            name='onos_voltha_port',
+            field=models.IntegerField(default=8181, help_text=b'The Voltha API port. By default 8181'),
+        ),
+    ]