[BUG] [promptflow-evals] Failed to invoke the Azure CLI when running evaluation

[Wix97]

Describe the bug
promptflow-evals version: 0.3.0

eval_result = evaluate(
    evaluation_name=f"{experiment_name}_{input_dataset.stem}",
    azure_ai_project=azure_ai_project,
    evaluators={
        "content_safety": ContentSafetyEvaluator(
            project_scope=azure_ai_project,
            credential=DefaultAzureCredential(),
            parallel=True,
        )
    },
    evaluator_config={
        "default": {
            "question": "${data.inputs.question}",
            "answer": "${data.outputs.copilot_answer}",
        }
    },
    data=str(output_dir / f"{experiment_name}.jsonl"),
)

When running the code above, the stream prompts the following error:

2024-06-19 11:33:46 +0800   28860 execution.flow     INFO     Current thread is not main thread, skip signal handler registration in AsyncNodesScheduler.
2024-06-19 11:33:46 +0800   28860 execution.flow     WARNING  Input 'project_scope' of evaluate_with_rai_service is not json serializable, use str to store it.
2024-06-19 11:33:46 +0800   28860 execution.flow     WARNING  Input 'credential' of evaluate_with_rai_service is not json serializable, use str to store it.
2024-06-19 11:33:46 +0800   28860 execution.flow     INFO     Start executing nodes in thread pool mode.
2024-06-19 11:33:46 +0800   28860 execution.flow     INFO     Current thread is not main thread, skip signal handler registration in AsyncNodesScheduler.
2024-06-19 11:33:46 +0800   28860 execution.flow     WARNING  Failed to serialize inputs or output for flow run because of cannot pickle '_thread.RLock' object.The inputs and output field in api_calls will be None.
2024-06-19 11:33:46 +0800   28860 execution          WARNING  [evaluate_with_rai_service in line None (index starts from 0)] stderr> AzureCliCredential.get_token failed: Failed to invoke the Azure CLI
2024-06-19 11:33:46 +0800   28860 execution.flow     INFO     Executing node validate_inputs. node run id: b185f8e5-f22f-4c44-8816-123f5c966134_validate_inputs_afb5ee9d-f2b6-4231-b880-046f1ed40835
2024-06-19 11:33:46 +0800   28860 execution.flow     INFO     Current thread is not main thread, skip signal handler registration in AsyncNodesScheduler.
2024-06-19 11:33:46 +0800   28860 execution          ERROR    Node evaluate_with_rai_service in line None failed. Exception: Execution failure in 'evaluate_with_rai_service': (CredentialUnavailableError) Failed to invoke the Azure CLI.
Traceback (most recent call last):
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\azure\identity\_credentials\azure_cli.py", line 199, in _run_command
    return subprocess.check_output(args, **kwargs)
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\subprocess.py", line 424, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\subprocess.py", line 507, in run
    stdout, stderr = process.communicate(input, timeout=timeout)
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\subprocess.py", line 1134, in communicate
    stdout, stderr = self._communicate(input, endtime, timeout)
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\subprocess.py", line 1526, in _communicate
    raise TimeoutExpired(self.args, orig_timeout)
subprocess.TimeoutExpired: Command '['cmd', '/c', 'az account get-access-token --output json --resource https://management.azure.com']' timed out after 10 seconds

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\promptflow\_core\flow_execution_context.py", line 182, in _invoke_tool_inner
    return f(**kwargs)
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\promptflow\tracing\_trace.py", line 556, in wrapped
    output = func(*args, **kwargs)
  File "C:\Users\xxxx\AppData\Local\anaconda3\envs\project\Lib\site-packages\promptflow\evals\evaluators\_content_safety\flow\evaluate_with_rai_service.py", line 189, in evaluate_with_rai_service
    rai_svc_url = get_rai_svc_url(project_scope, credential)
  File "C:\Users\xxxx\AppData\Local\anaconda3\envs\project\Lib\site-packages\promptflow\evals\evaluators\_content_safety\flow\evaluate_with_rai_service.py", line 165, in get_rai_svc_url
    discovery_url = _get_service_discovery_url(azure_ai_project=project_scope, credential=credential)
  File "C:\Users\xxxx\AppData\Local\anaconda3\envs\project\Lib\site-packages\promptflow\evals\evaluators\_content_safety\flow\evaluate_with_rai_service.py", line 148, in _get_service_discovery_url
    bearer_token = credential.get_token("https://management.azure.com/.default").token
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\azure\identity\_credentials\default.py", line 219, in get_token
    token = self._successful_credential.get_token(*scopes, claims=claims, tenant_id=tenant_id, **kwargs)
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\azure\identity\_internal\decorators.py", line 33, in wrapper
    token = fn(*args, **kwargs)
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\azure\identity\_credentials\azure_cli.py", line 112, in get_token
    output = _run_command(command, self._process_timeout)
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\azure\identity\_credentials\azure_cli.py", line 223, in _run_command
    raise error from ex
azure.identity._exceptions.CredentialUnavailableError: Failed to invoke the Azure CLI

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\promptflow\_core\flow_execution_context.py", line 90, in invoke_tool
    result = self._invoke_tool_inner(node, f, kwargs)
  File "c:\Users\xxxx\AppData\Local\anaconda3\envs\project\lib\site-packages\promptflow\_core\flow_execution_context.py", line 206, in _invoke_tool_inner
    raise ToolExecutionError(node_name=node_name, module=module) from e
promptflow._core._errors.ToolExecutionError: Execution failure in 'evaluate_with_rai_service': (CredentialUnavailableError) Failed to invoke the Azure CLI

The bug will not be triggered if parallel parameter of content safety evaluator equals to False.