Fix #360: don't recreate hosts when user_data changes as heat gets stuck and the stack become unrecoverable.

Author: ioggstream

bastion.yaml

@@ -224,6 +224,7 @@ resources:
       networks:
       - port: {get_param: port}
       user_data_format: SOFTWARE_CONFIG
+      user_data_update_policy: IGNORE
       user_data: {get_resource: init}
 
   # Install, configure and enable the Heat configuration agent

infra.yaml

@@ -279,6 +279,7 @@ resources:
       - port: {get_resource: port}
       - port: {get_attr: [internal_port, port]}
       user_data_format: SOFTWARE_CONFIG
+      user_data_update_policy: IGNORE
       user_data: {get_resource: init}
       scheduler_hints:
         group: {get_param: infra_server_group}

loadbalancer_dedicated.yaml

@@ -231,6 +231,7 @@ resources:
       networks:
       - port: {get_resource: port}
       user_data_format: SOFTWARE_CONFIG
+      user_data_update_policy: IGNORE
       user_data: {get_resource: init}
 
   # Collect a set of host configuration information in a single structure

master.yaml

@@ -264,6 +264,7 @@ resources:
       - port: {get_resource: port}
       - port: {get_attr: [internal_port, port]}
       user_data_format: SOFTWARE_CONFIG
+      user_data_update_policy: IGNORE
       user_data: {get_resource: init}
       scheduler_hints:
         group: {get_param: master_server_group}

node.yaml

@@ -391,6 +391,7 @@ resources:
       - port: {get_resource: port}
       - port: {get_attr: [internal_port, port]}
       user_data_format: SOFTWARE_CONFIG
+      user_data_update_policy: IGNORE
       user_data: {get_resource: init}
       metadata: {get_param: metadata}