Update metadata for Ansible galaxy support

Change-Id: I8ab5cd2c58c4a1961e31d677aa84a2687411f7fa
diff --git a/meta/main.yml b/meta/main.yml
index d96ad41..5dd12c2 100644
--- a/meta/main.yml
+++ b/meta/main.yml
@@ -5,6 +5,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 galaxy_info:
+  role_name: postgresql
   author: Open Networking Foundation
   description: PostgreSQL Database Server
   company: Open Networking Foundation