[blazar] Use database_address as default DB addr

The internal FQDN assumes that HAProxy is set up to route traffic to the
DB; other services default to the value of database_address.

Change-Id: I9a333a89adfa4f620f211c831d659b8d52e307d5

ansible/roles/blazar/defaults/main.yml

@@ -39,7 +39,7 @@ blazar_aggregate_pool_name: "freepool"
 ####################
 blazar_database_name: "blazar"
 blazar_database_user: "blazar"
-blazar_database_address: "{{ kolla_internal_fqdn }}:{{ database_port }}"
+blazar_database_address: "{{ database_address }}:{{ database_port }}"
 
 
 ####################