tree-wide: Use log_setup() everywhere

Otherwise the default log target is the console and we won't use
the journal socket even if it is available.

src/socket-activate/socket-activate.c

@@ -446,9 +446,7 @@ static int run(int argc, char **argv) {
         _cleanup_strv_free_ char **exec_argv = NULL;
         int r, n;
 
-        log_show_color(true);
-        log_parse_environment();
-        log_open();
+        log_setup();
 
         r = parse_argv(argc, argv);
         if (r <= 0)