Add neutron port tag hint for default_route_network

Adds a tag tripleo_default_route=$BOOL to neutron ports
created by heat indicating if the ports interface is
used for the default route.

The value is controlled by the 'default_route_networks'
in roles data.

With network-data-v2 the same tag will be used to
set up ansible vars appropriately. Having the heat driven
process add the tag can be useful for upgrade/migration
automation.

Related: blueprint network-data-v2-ports
Change-Id: I20d48b3a29193dbcb70ec5cb13daf153bb0aeff2

network/ports/port.j2

@@ -58,6 +58,11 @@ parameters:
     default: delete
     constraints:
       - allowed_values: [delete, retain]
+  DefaultRoute:
+    description: >
+      Whether this interface is used for the default route
+    type: boolean
+    default: false
 
 conditions:
   network_is_ctlplane:
@@ -98,6 +103,10 @@ resources:
             template: tripleo_stack_name=$STACK_NAME
             params:
               $STACK_NAME: {get_param: RootStackName}
+        - str_replace:
+            template: tripleo_default_route=$BOOL
+            params:
+              $BOOL: {get_param: DefaultRoute}
 
 outputs:
   ip_address:

network/ports/port_from_pool.j2

@@ -60,6 +60,11 @@ parameters:
 {%- endif %}
     description: Cidr for the {{network.name_lower}} network.
     type: string
+  DefaultRoute: # Here for compatibility
+    description: >
+      Whether this interface is used for the default route
+    type: boolean
+    default: false
 
 outputs:
   ip_address:

puppet/role.role.j2.yaml

@@ -338,6 +338,9 @@ resources:
 {%- endif %}
           - {get_param: {{role.name}}IPs}
       NodeIndex: {get_param: NodeIndex}
+{%- if role.default_route_networks is defined and network.name in role.default_route_networks %}
+      DefaultRoute: true
+{%- endif %}
   {%- endif %}
   {%- endfor %}