bundles/systemd-networkd: add "enable-resolved" flag

bundles/systemd-networkd/items.py

@@ -10,11 +10,19 @@ files = {
     '/etc/network/interfaces': {
         'delete': True,
     },
-    '/etc/resolv.conf': {
-        'content_type': 'mako',
-    },
 }
 
+if node.metadata.get('systemd-networkd/enable-resolved', False):
+    symlinks['/etc/resolv.conf'] = {
+        'target': '/run/systemd/resolve/stub-resolv.conf',
+    }
+    svc_systemd['systemd-resolved'] = {}
+else:
+    files['/etc/resolv.conf'] = {
+        'content_type': 'mako',
+    }
+
+
 directories = {
     '/etc/systemd/network': {
         'purge': True,