Do not log passwords

This prevents data to be leaked into the callback plugin.

Change-Id: Ia490c2a62bb53b9bdc191787820e1fc12b8aaa58
(cherry picked from commit 4dc7bad032)

tasks/cloudkitty_db_setup.yml

@@ -22,6 +22,7 @@
     login_host: "{{ cloudkitty_galera_address }}"
     name: "{{ cloudkitty_galera_database }}"
     state: "present"
+  no_log: true
   tags:
     - cloudkitty-db-setup
 
@@ -35,6 +36,7 @@
     host: "{{ item }}"
     state: "present"
     priv: "{{ cloudkitty_galera_database }}.*:ALL"
+  no_log: true
   with_items:
     - "localhost"
     - "%"