added commented line for ldap

data/conf.d/31-auth.yml

@@ -1,7 +1,9 @@
-auth_method: internal
+auth_method:
+  - internal
+#  - ldap
 auth_password_format: scram
 auth_scram_hash: sha512
 
 disable_sasl_mechanisms:
   - "digest-md5"
-  - "x-oauth2"
+  - "x-oauth2"