changing node flavour..otherwise update won't work

CICD/heat/gc_HOT.yaml

@@ -13,7 +13,7 @@ parameters:
     type: string
     label: Image ID
     description: Centos Image
-    default: 12da1997-5122-4be3-a2a9-2f44961c1b16
+    default: c47c3acb-9657-4243-9e14-e6c676157e3b #with NetworkManager
   ssh_key:
     type: string
     default: gc_key
@@ -104,7 +104,7 @@ resources:
     name:
      list_join: [ '-', [ { get_param: "OS::stack_name" }, 'sql0' ]]
     availability_zone: { get_param: avz }
-    flavor: t3.small
+    flavor: m3.small
     image: { get_param: centos_7_image_id }
     key_name: { get_param: ssh_key }
     security_groups: [ { get_resource: SSHMonashSecGroup }, { get_resource: SlurmSecGroup }, { get_resource: MySQLSecGroup }, { get_resource: NFSSecGroup } ]
@@ -175,7 +175,7 @@ resources:
      type: "OS::Nova::Server"
      properties:
       #availability_zone: { get_param: avz }
-      flavor: t3.small
+      flavor: m3.xsmall
       image: { get_param: centos_7_image_id }
       key_name: { get_param: ssh_key }
       name:
@@ -196,7 +196,7 @@ resources:
      type: "OS::Nova::Server"
      properties:
       #availability_zone: { get_param: avz }
-      flavor: t3.small
+      flavor: m3.xsmall
       image: { get_param: centos_7_image_id }
       key_name: { get_param: ssh_key }
       name:
@@ -217,7 +217,7 @@ resources:
      type: "OS::Nova::Server"
      properties:
       #availability_zone: { get_param: avz }
-      flavor: t3.small
+      flavor: m3.xsmall
       image: { get_param: centos_7_image_id }
       key_name: { get_param: ssh_key }
       name:
@@ -238,7 +238,7 @@ resources:
      type: "OS::Nova::Server"
      properties:
       #availability_zone: { get_param: avz }
-      flavor: t3.small
+      flavor: m3.xsmall
       image: { get_param: ubuntu_1804_image_id }
       key_name: { get_param: ssh_key }
       name: