networkd: make VLANs more versatile

The configuration of vlans in this role were specifically designed for the setup of the vm servers. Now VLANs can be used without bridges.

networkd/tasks/vlan.yml

@@ -34,7 +34,7 @@
     group: root
     mode: '0644'
   with_items: "{{ vlan.vlans }}"
-  when: item.bridge
+  when: item.bridge | default(False)
   notify:
     - restart networkd
 - name: ensure bridge networks are configured
@@ -45,6 +45,6 @@
     group: root
     mode: '0644'
   with_items: "{{ vlan.vlans }}"
-  when: item.bridge
+  when: item.bridge | default(False)
   notify:
     - restart networkd