Add databag for nova_api db_password

Change Idf6645064a1c2f337f542b29a026969c7d35efbe added a nova_api
database, we need the corresponding data bag for the integration tests
to work.

Change-Id: I4aa89315eb86166193cf3c389adfdd868736d5dc

data_bags/db_passwords/nova_api.json

@@ -0,0 +1,9 @@
+{
+  "id": "nova_api",
+  "nova_api": {
+    "encrypted_data": "HNKWBIqI97m4kKUzmJPMhFOs88674fiRoZJutZalsx4=\n",
+    "iv": "uZn6Fma8PxAJgyMnqEUk0A==\n",
+    "version": 1,
+    "cipher": "aes-256-cbc"
+  }
+}