[snmp|test] Change (tmp) connection to standard_io for peer start

Author: bmk

lib/snmp/test/snmp_test_lib.erl

@@ -3164,13 +3164,18 @@ trap_exit(Flag) ->
 %% Node utility functions
 %% 
 
+-define(START_OPTIONS(SO), (SO)#{connection => standard_io}).
+%% -define(START_OPTIONS(SO), SO).
+
 start_node(Name, Unlink) ->
     Args = ["-s", "snmp_test_sys_monitor", "start", "-s", "global", "sync"],
     %% Note that the 'verbose' option may not exist...
     %% If it does not exist, this (verbose => true) "should" do nothing...
-    case ?CT_PEER(#{name    => Name,
-                    args    => Args,
-                    verbose => true}) of
+    BaseStartOptions = #{name    => Name,
+                         args    => Args,
+                         verbose => true},
+    StartOptions = ?START_OPTIONS(BaseStartOptions),
+    case ?CT_PEER(StartOptions) of
         {ok, Peer, Node}  ->
             %% Must unlink, otherwise peer will exit before test case
             maybe_unlink(Unlink, Peer),