Merge branch 'rc-build-33-tidy-duplicate-setting' into 'master'

Prune setting of postgresql['sql_user_password']

Closes gitlab-org/build/team-tasks#33

See merge request gitlab-org/gitlab-ee!3379

doc/administration/high_availability/alpha_database.md

@@ -232,7 +232,6 @@ See `START user configuration` section in the next step for required information
     postgresql['hot_standby'] = 'on'
     postgresql['wal_level'] = 'replica'
     postgresql['shared_preload_libraries'] = 'repmgr_funcs'
-    postgresql['sql_user_password'] = 'POSTGRESQL_PASSWORD_HASH'
 
     # Disable automatic database migrations
     gitlab_rails['auto_migrate'] = false