selftests/clone3: test clone3 with CLONE_NEWTIME

Verify that clone3 can be called successfully with CLONE_NEWTIME in
flags.

Cc: Andrey Vagin <avagin@openvz.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>

tools/testing/selftests/clone3/clone3.c

@@ -195,5 +195,8 @@ int main(int argc, char *argv[])
 	test_clone3(CLONE_NEWPID, getpagesize() + 8, -E2BIG,
 			CLONE3_ARGS_NO_TEST);
 
+	/* Do a clone3() in a new time namespace */
+	test_clone3(CLONE_NEWTIME, 0, 0, CLONE3_ARGS_NO_TEST);
+
 	return !ksft_get_fail_cnt() ? ksft_exit_pass() : ksft_exit_fail();
 }