`test_velocity` times out on CI

[christophfroehlich]

ros-controls/ros2_control_ci#333
from the log it seems that gz did not start at all. let's see if this happens more often

2025-05-16T03:45:07.2401026Z     Start 7: tests_velocity_test.py
2025-05-16T03:45:07.2401176Z 
2025-05-16T03:45:07.2403882Z 7: Test command: /usr/bin/python3 "-u" "/opt/ros/kilted/share/ament_cmake_test/cmake/run_test.py" "/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/gz_ros2_control_tests/test_results/gz_ros2_control_tests/tests_velocity_test.py.xunit.xml" "--package-name" "gz_ros2_control_tests" "--output-file" "/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/gz_ros2_control_tests/launch_test/tests_velocity_test.py.txt" "--env" "PYTHONDONTWRITEBYTECODE=1" "--command" "/usr/bin/python3" "-m" "launch_testing.launch_test" "/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/src/ros-controls/gz_ros2_control/gz_ros2_control_tests/tests/velocity_test.py" "--junit-xml=/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/gz_ros2_control_tests/test_results/gz_ros2_control_tests/tests_velocity_test.py.xunit.xml" "--package-name=gz_ros2_control_tests"
2025-05-16T03:45:07.2407192Z 7: Working Directory: /home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/gz_ros2_control_tests/tests
2025-05-16T03:45:07.2407670Z 7: Test timeout computed to be: 50
2025-05-16T03:45:07.2407925Z 7: -- run_test.py: extra environment variables:
2025-05-16T03:45:07.2408188Z 7:  - PYTHONDONTWRITEBYTECODE=1
2025-05-16T03:45:07.2408729Z 7: -- run_test.py: invoking following command in '/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/gz_ros2_control_tests/tests':
2025-05-16T03:45:07.2410393Z 7:  - /usr/bin/python3 -m launch_testing.launch_test /home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/src/ros-controls/gz_ros2_control/gz_ros2_control_tests/tests/velocity_test.py --junit-xml=/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/gz_ros2_control_tests/test_results/gz_ros2_control_tests/tests_velocity_test.py.xunit.xml --package-name=gz_ros2_control_tests
2025-05-16T03:45:07.2411904Z 7: [INFO] [launch]: All log files can be found below /root/.ros/log/2025-05-16-03-43-27-634788-2fc89f587af6-57583
2025-05-16T03:45:07.2412424Z 7: [INFO] [launch]: Default logging verbosity is set to INFO
2025-05-16T03:45:07.2412903Z 7: test_arm (gz_ros2_control_tests.TestFixture.test_arm) ... [INFO] [gazebo-1]: process started with pid [57590]
2025-05-16T03:45:07.2413372Z 7: [INFO] [parameter_bridge-2]: process started with pid [57606]
2025-05-16T03:45:07.2413792Z 7: [INFO] [robot_state_publisher-3]: process started with pid [57607]
2025-05-16T03:45:07.2414134Z 7: [INFO] [create-4]: process started with pid [57608]
2025-05-16T03:45:07.2414423Z 7: [INFO] [python3-5]: process started with pid [57609]
2025-05-16T03:45:07.2414838Z 7: [robot_state_publisher-3] [INFO] [1747367008.150115371] [robot_state_publisher]: Robot initialized
2025-05-16T03:45:07.2415335Z 7: [create-4] [INFO] [1747367008.162539922] [ros_gz_sim]: Requesting list of world names.
2025-05-16T03:45:07.2415831Z 7: [create-4] [INFO] [1747367008.611047536] [ros_gz_sim]: Waiting messages on topic [robot_description].
2025-05-16T03:45:07.2416308Z 7: [create-4] [INFO] [1747367008.622495250] [ros_gz_sim]: Entity creation successful.
2025-05-16T03:45:07.2416897Z 7: [INFO] [create-4]: process has finished cleanly [pid 57608]
2025-05-16T03:45:07.2417213Z 7: [INFO] [spawner-6]: process started with pid [57673]
2025-05-16T03:45:07.2417802Z 7: [spawner-6] [INFO] [1747367009.335557351] [spawner_joint_state_broadcaster]: waiting for service /controller_manager/list_controllers to become available...
2025-05-16T03:45:07.2418425Z 7: FAIL
2025-05-16T03:45:07.2418643Z 7/8 Test #7: tests_velocity_test.py ...........***Timeout  50.01 sec

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