netplan interface: dhcp override options.

templates/70-ansible.yaml.j2

@@ -5,5 +5,10 @@ network:
         {{ int.name }}:
             dhcp4: {{ int.dhcp4 }}
             mtu: {{ int.mtu }}
+{% if int.dhcp_overrides | default(true) %}
+            dhcp4-overrides:
+              use-dns: false
+              use-routes: false
+{% endif %}
 {% endfor %}