Use translated network name

Instead of hard-coding a name translation, let's use the "translator"
provided by the networking_mapper directly.

roles/libvirt_manager/tasks/reserve_dnsmasq_ips.yml

@@ -52,7 +52,7 @@
         ternary(_translate[net.name], [net.name])
       }}
     _net_name: >-
-      {{ (net.name is match '.*osp_trunk$') | ternary('ctlplane', net.name) }}
+      {{ _net_domain | first }}
     _cleaned_netname: "{{ _net_name | regex_replace('^cifmw[_-]', '') }}"
   block:
     - name: Create host records