Add db host and user

Signed-off-by: Patrick Uiterwijk <patrick@puiterwijk.org>

roles/openshift-apps/transtats/templates/secret.yml

@@ -8,4 +8,6 @@ stringData:
 {% if env == 'staging' %}
   djang-secret-key: "{{transtats_stg_django_secret_key}}"
   database-password: "{{transtats_stg_database_password}}"
+  database-host: db01.stg.phx2.fedoraproject.org
+  database-user: transtats
 {% endif %}