Fix incorrect ansible variable

Change-Id: Ic6755dfe5c3741e4a945c8353f643bbf1479c172
Closes-Bug: #1519040

ansible/roles/keystone/tasks/bootstrap.yml

@@ -31,7 +31,7 @@
         priv='{{ keystone_database_name }}.*:ALL'
         append_privs='yes'"
   register: database_user_create
-  changed_when: "{{ database.stdout.find('localhost | SUCCESS => ') != -1 and
+  changed_when: "{{ database_user_create.stdout.find('localhost | SUCCESS => ') != -1 and
                     (database_user_create.stdout.split('localhost | SUCCESS => ')[1]|from_json).changed }}"
   failed_when: database_user_create.stdout.split()[2] != 'SUCCESS'
   run_once: True

ansible/roles/magnum/tasks/bootstrap.yml

@@ -29,7 +29,7 @@
         priv='{{ magnum_database_name }}.*:ALL'
         append_privs='yes'"
   register: database_user_create
-  changed_when: "{{ database.stdout.find('localhost | SUCCESS => ') != -1 and
+  changed_when: "{{ database_user_create.stdout.find('localhost | SUCCESS => ') != -1 and
                     (database_user_create.stdout.split('localhost | SUCCESS => ')[1]|from_json).changed }}"
   failed_when: database_user_create.stdout.split()[2] != 'SUCCESS'
   run_once: True