Adding the right image tag for heat init container

1. changed image tag for heat init container
2. modified .gitreview file to point to contrail's gerrit
3. Removed .zuul.yaml file for now

Change-Id: I33602b063888aa5c24cc0153fe9e3201b2a78d0c
Partial-Bug: #1749018

.gitreview

@@ -1,4 +1,16 @@
+#
+# Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
+#
+# OpenContrail Code Review System
+#
+# Please visit opencontrail.org additional information.
+#
+# e.g. After changes are complete and commited to a local branch, do
+# 'git review' to submit changeset to review.opencontrail.org Code Review
+# (gerrit) System.
+#
 [gerrit]
-host=review.openstack.org
+host=review.opencontrail.org
 port=29418
-project=openstack/openstack-helm.git
+project=Juniper/openstack-helm.git
+defaultbranch=master

tools/overrides/backends/opencontrail/heat.yaml

@@ -14,7 +14,7 @@
 
 images:
   tags:
-    opencontrail_heat_init: docker.io/opencontrailnightly/contrail-openstack-heat-init:master-centos7-ocata-bld-13
+    opencontrail_heat_init: docker.io/opencontrailnightly/contrail-openstack-heat-init:ocata-master-19
 
 conf:
   heat: