test: run message and pseudo-tty tests in parallel

PR-URL: https://github.com/nodejs/node/pull/38502
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/message/testcfg.py

@@ -43,6 +43,7 @@ class MessageTestCase(test.TestCase):
     self.config = config
     self.arch = arch
     self.mode = mode
+    self.parallel = True
 
   def IgnoreLine(self, str):
     """Ignore empty lines and valgrind output."""

test/pseudo-tty/testcfg.py

@@ -48,6 +48,7 @@ class TTYTestCase(test.TestCase):
     self.config = config
     self.arch = arch
     self.mode = mode
+    self.parallel = True
 
   def IgnoreLine(self, str_arg):
     """Ignore empty lines and valgrind output."""