Clean up RKE scripts

Change-Id: I1508fc314df9a80f09f2dc86194832401f0a7652
Issue-ID: INT-993
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
diff --git a/deployment/heat/onap-rke/parts/onap-oom-3.yaml b/deployment/heat/onap-rke/parts/onap-oom-3.yaml
index 8dc35b6..3b3cf70 100644
--- a/deployment/heat/onap-rke/parts/onap-oom-3.yaml
+++ b/deployment/heat/onap-rke/parts/onap-oom-3.yaml
@@ -1,4 +1,7 @@
 outputs:
+  docker_proxy:
+    value: { get_param: docker_proxy }
+
   rancher_vm_ip:
     description: The IP address of the rancher instance
     value: { get_attr: [rancher_floating_ip, floating_ip_address] }