Add deleton_policy to network port resources

In perparation for trainsition from composable network
ports  managed by heat, to composable network ports
managed with other tooling.

The upgrade prepare step need to set ``PortDeletionPolicy``
to 'retain', so that network ports are not deleted when
running converge.

Change-Id: I16281faefdf68fcaee4c51caa47516ea7084418b
Partial-Implements: blueprint network-data-v2-ports

network/ports/ovn_mac_addr_port.yaml

@@ -12,10 +12,19 @@ parameters:
     default: ovn_mac_addr_net
     description: The name of the OVNMacAddr network.
     type: string
+  PortDeletionPolicy:
+    description: >
+      Whether to retain or delete the neutron port resource on deletion of the
+      stack
+    type: string
+    default: delete
+    constraints:
+      - allowed_values: [delete, retain]
 
 resources:
   OVNMacAddressPort:
     type: OS::Neutron::Port
+    deletion_policy: {get_param: PortDeletionPolicy}
     properties:
       name: {get_param: PortName}
       network: {get_param: OVNMacAddressNetworkName}

network/ports/port.j2

@@ -51,6 +51,14 @@ parameters:
   NodeIndex: # Here for compatibility with from_pool.yaml
     default: 0
     type: number
+  PortDeletionPolicy:
+    description: >
+      Whether to retain or delete the neutron port resource on deletion of the
+      stack
+    type: string
+    default: delete
+    constraints:
+      - allowed_values: [delete, retain]
 
 conditions:
   network_is_ctlplane:
@@ -72,6 +80,7 @@ resources:
 
   {{network.name}}Port:
     type: OS::Neutron::Port
+    deletion_policy: {get_param: PortDeletionPolicy}
   {%- if set_external_id|default(false) and network.external_resource_vip_id|default('') %}
     external_id: {{network.external_resource_vip_id}}
   {%- endif %}

network/ports/vip.yaml

@@ -45,6 +45,14 @@ parameters:
         [{'ip_address':'1.2.3.4'}]
     default: []
     type: json
+  PortDeletionPolicy:
+    description: >
+      Whether to retain or delete the neutron port resource on deletion of the
+      stack
+    type: string
+    default: delete
+    constraints:
+      - allowed_values: [delete, retain]
 
 conditions:
   network_is_ctlplane:
@@ -65,6 +73,7 @@ conditions:
 resources:
   VipPort:
     type: OS::Neutron::Port
+    deletion_policy: {get_param: PortDeletionPolicy}
     properties:
       network: {get_param: NetworkName}
       name: {get_param: PortName}