Change URI to point to onap git

The gerrit link which was used before is not working as expected.
The downloaded file was with a different name which is difficult
to parse. So the URL is now changed to onap git reference.

Change-Id: I4c4cb289d40eb5340f502c027f4e900ca422e6ba
Issue-ID: INT-626
Signed-off-by: Sudhakar Reddy <Sudhakar.Reddy@amdocs.com>
diff --git a/deployment/Azure_ARM_Template/scripts/azure-rancher-server.sh b/deployment/Azure_ARM_Template/scripts/azure-rancher-server.sh
index 1c4373c..fc92c29 100644
--- a/deployment/Azure_ARM_Template/scripts/azure-rancher-server.sh
+++ b/deployment/Azure_ARM_Template/scripts/azure-rancher-server.sh
@@ -3,7 +3,7 @@
 set -x
 
 DOCKER_VERSION=17.03
-RANCHER_VERSION=1.6.14
+RANCHER_VERSION=1.6.18
 KUBECTL_VERSION=1.8.10
 HELM_VERSION=2.9.1