Send output of test_rclcpp tests to screen (#419)
Send output of test_rclcpp tests to screen (#419)

This makes it easier to determine which tests are failing as we can see the gtest output.

Signed-off-by: Jacob Perron <f862f167b85d41b225785c70d70808bc7337c1fe@openrobotics.org>
ros2/system_tests,ros2/system_tests