Add tags to THT network resources

This combines several changes that added tags to
network resources into one commit.

Add an index tag on neutron network resources

  When using the multiple nic-config templates in THT
  and in tripleo-ansible the ordering of networks in
  the network_data file matters.

  Add a a tag 'tripleo_net_idx' to neutron resources
  to keep track of the ordering.

Add tripleo_network_name tag hint to networks

  The ansible module to manage networks sets the name
  upper as a tag hint on the neutron network resources.
  tripleo_ansible/ansible_plugins/modules/tripleo_composable_network.py#L124

  This change adds this tag for Heat managed networks as well.

Depends-On: https://review.opendev.org/792196
Partial-Implements: blueprint network-data-v2-ports
(cherry picked from commit 2d0125ed40)
(cherry picked from commit 70dc61cc0a)
Change-Id: I08b98e9daa625c7c81e50a8ba67bcfc91af37cf0

network/network.j2

@@ -178,6 +178,8 @@ resources:
           - {get_param: {{network.name}}NetValueSpecs}
           - {'mtu': {get_param: {{network.name}}Mtu}}
       tags:
+        - tripleo_net_idx={{network.idx}}
+        - tripleo_network_name={{network.name}}
         - tripleo_vip={{network.vip|default(false)}}
 {%- if network.service_net_map_replace|default('') %}
         - tripleo_service_net_map_replace={{network.service_net_map_replace}}

tools/process-templates.py

@@ -158,6 +158,11 @@ def process_templates(template_path, role_data_path, output_dir,
         if network_data is None:
             network_data = []
 
+    # Set internal network index key for each network, network resources
+    # are created with a tag tripleo_net_idx
+    for idx, net in enumerate(network_data):
+        network_data[idx].update({'idx': idx})
+
     j2_excludes = {}
     j2_excludes_path = os.path.join(template_path, 'j2_excludes.yaml')
     if os.path.exists(j2_excludes_path):