Add WERROR option to ament_add_pytest_test (#168)
Add WERROR option to ament_add_pytest_test (#168)

This has the benefit of making deprecation warnings visible, which are not by default.
Default value for the option is OFF.

Signed-off-by: Jacob Perron <f862f167b85d41b225785c70d70808bc7337c1fe@openrobotics.org>
ament/ament_cmake,ament/ament_cmake,ament/ament_cmake