bundles/vnstat: introduce, add to home.router

bundles/vnstat/metadata.py

@@ -0,0 +1,25 @@
+defaults = {
+    'apt': {
+        'packages': {
+            'vnstat': {},
+            'vnstati': {},
+        },
+    },
+    'vnstat': {
+        'bandwidth': '1000',
+    },
+}
+
+
+@metadata_reactor
+def get_default_interface(metadata):
+    interfaces = sorted(metadata.get('interfaces', {}).keys())
+
+    if len(interfaces):
+        return {
+            'vnstat': {
+                'interface': interfaces[0],
+            },
+        }
+
+    return {}