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.

Change-Id: I717b06a0578dccca0e2152f6d454ad7a96cff8fb
Partial-Implements: blueprint network-data-v2-ports

network/network.j2

@@ -179,6 +179,7 @@ resources:
           - {'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}}