[CI] Add integration test for robotic ultrasound workflow

[mingxin-zheng]

Fixes #ISSUE_NUMBER

Description

[mingxin-zheng]

Example run:

python tools/run_all_tests.py --integration
Looking for tests in workflows/robotic_ultrasound/tests
Running integration test: workflows/robotic_ultrasound/tests/test_simulation/test_integration_eval.py
Sending SIGINT after 120 seconds...
2025-03-25 03:30:26 [114,443ms] [Warning] [omni.usd] Unexpected reference count of 3 for UsdStage 'anon:0x13e0fd90:World0.usd' while being closed in UsdContext (this may indicate it is still resident in memory).
[INFO]: Simulation is stopped. Shutting down the app.



.
----------------------------------------------------------------------
Ran 1 test in 123.015s

OK

All tests passed

[Copilot]

Pull Request Overview

This PR introduces integration tests for the robotic ultrasound workflow and adjusts related scripts to support integration testing. Key changes include:

• Addition of a new integration test file for simulation evaluation.
• Updates to the evaluation script with modified defaults and an added output message.
• Enhancements to the test runner script to separately handle integration tests.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
workflows/robotic_ultrasound/tests/test_simulation/test_integration_eval.py	New integration test implementation for simulation evaluation with process monitoring.
workflows/robotic_ultrasound/scripts/simulation/environments/state_machine/pi0_policy/eval.py	Modified default argument values and added an output message to signal environment reset.
workflows/robotic_ultrasound/scripts/simulation/README.md	Updated command example to reflect the new defaults.
tools/run_all_tests.py	Enhanced test discovery and execution logic, including segregation of integration tests.

[mingxin-zheng]

Test output:

$ python tools/run_all_tests.py --integration
Looking for tests in workflows/robotic_ultrasound/tests
Running test: workflows/robotic_ultrasound/tests/test_simulation/test_integration_eval.py
Sending SIGINT after 120 seconds...
2025-03-31 16:28:40 [113,732ms] [Warning] [omni.usd] Unexpected reference count of 3 for UsdStage 'anon:0x1914e650:World0.usd' while being closed in UsdContext (this may indicate it is still resident in memory).
[INFO]: Simulation is stopped. Shutting down the app.


.
----------------------------------------------------------------------
Ran 1 test in 123.622s

OK

[KumoLiu]

LGTM now, thanks for the quick update.