bundles/grafana: add support for custom managed dashboards

bundles/grafana/items.py

@@ -1,5 +1,6 @@
 from itertools import count
-from os.path import join
+from os import listdir
+from os.path import isdir, isfile, join
 from pathlib import Path
 from uuid import UUID
 
@@ -113,3 +114,17 @@ for rnode in repo.nodes:
             'svc_systemd:grafana-server:restart',
         },
     }
+
+
+additional_path = join(repo.path, 'data', 'grafana', 'files', node.name, 'dashboards')
+if isdir(additional_path):
+    for file in listdir(additional_path):
+        if not isfile(join(additional_path, file)) or file.startswith('.') or file.startswith('_'):
+            continue
+
+        files[f'/var/lib/grafana/dashboards/{file}'] = {
+            'source': join(node.name, 'dashboards', file),
+            'triggers': {
+                'svc_systemd:grafana-server:restart',
+            },
+        }