fixup! [supervisor] Add test of scaling on start/stop of many children

lib/stdlib/test/supervisor_SUITE.erl

@@ -167,6 +167,7 @@ end_per_testcase(_Case, _Config) ->
         _ ->
             error
     end,
+    application:start(sasl), % sasl is stopped by some test cases
     ok.
 
 start_link(InitResult) ->
@@ -2339,6 +2340,7 @@ order_of_children(_Config) ->
 %% Test that a non-simple supervisor scales well for starting and
 %% stopping many children.
 scale_start_stop_many_children(_Config) ->
+    application:stop(sasl), % to avoid progress reports choking cth_log_redirect
     process_flag(trap_exit, true),
     {ok, _Pid}  = start_link({ok, {{one_for_one, 2, 3600}, []}}),
     N1 = 1000,