fix(exhook): correct the broker-info

apps/emqx_exhook/src/emqx_exhook_server.erl

@@ -160,7 +160,10 @@ do_deinit(Name) ->
     ok.
 
 do_init(ChannName) ->
-    Req = #{broker => maps:from_list(emqx_sys:info())},
+    %% BrokerInfo defined at: exhook.protos
+    BrokerInfo = maps:with([version, sysdescr, uptime, datetime],
+                        maps:from_list(emqx_sys:info())),
+    Req = #{broker => BrokerInfo},
     case do_call(ChannName, 'on_provider_loaded', Req) of
         {ok, InitialResp} ->
             try