bundles/postgresql: add bundle

bundles/postgresql/items.py

@@ -0,0 +1,15 @@
+postgres_roles = {}
+postgres_db = {}
+
+for user, config in node.metadata['postgresql']['users'].items():
+    postgres_roles[user] = {
+        'password': config['password'],
+    }
+
+for database, config in node.metadata['postgresql']['databases'].items():
+    postgres_db[database] = {
+        'owner': config['owner'],
+        'needs': {
+            'postgres_role:{}'.format(config['owner']),
+        },
+    }