rabbit_shovel_dyn_worker_sup_sup: introduce id/1 from main

(cherry picked from commit 7ecd751)

Author: michaelklishin

deps/rabbitmq_shovel/src/rabbit_shovel_dyn_worker_sup_sup.erl

@@ -96,3 +96,6 @@ cleanup_specs() ->
 
 init([]) ->
     {ok, {{one_for_one, 3, 10}, []}}.
+
+id({V, S} = Name) ->
+    {[V, S], Name}.