fix: fix failed unit tests in test_integration_client.py

[luaifei]

Change Scope

Fix the failed unit tests in the test_integration_client.py.

Root cause

The integration_client.py constructor has broken change recently, the field changes from trigger: Optional[str] to triggers: List.

[hangfei]

The original commiter rolled back the change: 7f76af4. Let's wait for the change and we can add the tests again.

[luaifei]

Sure @hangfei