Add mtu parameter to OOM heat template

Change-Id: Ia478de1f3484fa9b32fe34cf0ec8a5defe118f2e
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 ba3933b..5f117ac 100644
--- a/deployment/heat/onap-oom/parts/onap-oom-1.yaml
+++ b/deployment/heat/onap-oom/parts/onap-oom-1.yaml
@@ -93,6 +93,10 @@
     description: Set to "true" if you want to use a RAM disk for /dockerdata-nfs/.
     default: "false"
 
+  mtu:
+    type: number
+    default: 1500
+
 resources:
   random-str:
     type: OS::Heat::RandomString