Add tests for pending call timeouts

Add tests for pending call timeouts

* test/test-service.c (handle_delay_echo, path_message_func): Add a
  variant of the Echo method which sleeps for a short time.
* test/name-test/test-pending-call-timeout.c: Run tests with default,
  specified and infinite timeout to make sure we get the reply.
* test/name-test/run-test.sh: Run the new test
* test/name-test/Makefile.am: Build the new test

Signed-off-by: Scott James Remnant <scott@ubuntu.com>
(cherry picked from commit c1f165261afcc3bafa9b24ff916bb231628e3782)