gce.bind01: exclude from backups

nodes/gce/bind01.py

@@ -13,6 +13,11 @@ nodes['gce.bind01'] = {
         'webserver',
     },
     'metadata': {
+        'backups': {
+            # This is the primary DNS server. However, we only use
+            # replication for DynDNS, currently. No need for backups here.
+            'exclude_from_backups': True,
+        },
         'interfaces': {
             'ens4': {
                 'ips': {