Alleviate startup disk contention issues

Add tuneable parameters in the heat template to
try to alleviate startup disk contention issues.

Also turn off use of RAM disk by default, reduce
size of Rancher VM, and use the RAM saved for an
extra k8s compute VM.

Change-Id: Ic638f33479338ebb9339b249ced9d6fa684935fa
Issue-ID: INT-586
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
diff --git a/deployment/heat/onap-oom/parts/onap-oom-1.yaml b/deployment/heat/onap-oom/parts/onap-oom-1.yaml
index 3c34f75..a96c9a3 100644
--- a/deployment/heat/onap-oom/parts/onap-oom-1.yaml
+++ b/deployment/heat/onap-oom/parts/onap-oom-1.yaml
@@ -84,6 +84,15 @@
     type: string
     default: "2.9.1"
 
+  helm_deploy_delay:
+    type: string
+    default: "2m"
+
+  use_ramdisk:
+    type: string
+    description: Set to "true" if you want to use a RAM disk for /dockerdata-nfs/.
+    default: "false"
+
 resources:
   random-str:
     type: OS::Heat::RandomString