relax number of expected 'waiting' messages in test_toy_build_lock

Author: boegel

test/framework/toy_build.py

@@ -3562,7 +3562,7 @@ def __exit__(self, type, value, traceback):
 
                 wait_matches = wait_regex.findall(stdout)
                 # we can't rely on an exact number of 'waiting' messages, so let's go with a range...
-                self.assertIn(len(wait_matches), range(2, 5))
+                self.assertIn(len(wait_matches), range(1, 5))
 
                 self.assertTrue(ok_regex.search(stdout), "Pattern '%s' found in: %s" % (ok_regex.pattern, stdout))