Bump helm/kubectl versions to match OOM

Bump helm to 2.12.5 and kubectl to 1.13.5.

Change-Id: I5f6fe2b814dc55bf42e6807c2e6f17ae6319f064
Issue-ID: OOM-1598
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
diff --git a/deployment/heat/onap-rke/parts/onap-oom-1.yaml b/deployment/heat/onap-rke/parts/onap-oom-1.yaml
index 4654859..886e1be 100644
--- a/deployment/heat/onap-rke/parts/onap-oom-1.yaml
+++ b/deployment/heat/onap-rke/parts/onap-oom-1.yaml
@@ -68,21 +68,13 @@
     type: string
     default: "18.09.5"
 
-  rancher_version:
-    type: string
-    default: "1.6.26"
-
-  rancher_agent_version:
-    type: string
-    default: "1.2.11"
-
   kubectl_version:
     type: string
-    default: "1.13.4"
+    default: "1.13.5"
 
   helm_version:
     type: string
-    default: "2.9.1"
+    default: "2.12.5"
 
   helm_deploy_delay:
     type: string