[postgresql_server] Grant datanommer_ro access to datanommer2 db

The datanommer_ro user was created in the task, but never got privilege to read
from datanommer2 db. This commit is fixing that.

Signed-off-by: Michal Konečný <mkonecny@redhat.com>

roles/postgresql_server/tasks/datanommer.yml

@@ -75,6 +75,13 @@
         owner: "{{ datanommerDBUser }}"
         encoding: UTF-8
 
+    - name: grant datanommer_ro read only access to datanommer2
+      postgresql_privs:
+        database: datanommer2
+        privs: SELECT
+        objs: ALL_IN_SCHEMA
+        roles: datanommer_ro
+
     # Enable timescaledb
     - name: enable timescaledb
       postgresql_ext: