Add the ability to update user passwords with ansible (when using the matrix-postgres container).

roles/matrix-base/defaults/main.yml

@@ -48,6 +48,7 @@ run_import_postgres: true
 run_upgrade_postgres: true
 run_start: true
 run_register_user: true
+run_update_user_password: true
 run_import_sqlite_db: true
 run_import_media_store: true
 run_self_check: true