Use auth-client for auth service

Signed-off-by: René Jochum <rene@jochum.dev>

conf/conf.d/10-master.conf

@@ -93,7 +93,13 @@ service auth {
   # To give the caller full permissions to lookup all users, set the mode to
   # something else than 0666 and Dovecot lets the kernel enforce the
   # permissions (e.g. 0777 allows everyone full permissions).
-  inet_listener auth-userdb {
+  unix_listener auth-userdb {
+    #mode = 0666
+    #user = 
+    #group = 
+  }
+
+  inet_listener auth-client {
     port = 12345
   }