OICD authentication on azCliUtility.ts emits errors with too high severity

[jikuja]

azCliUtility emits errors for transient failures:

azure-pipelines-tasks-common-packages/common-npm-packages/azure-arm-rest/azCliUtility.ts

Lines 198 to 204 in 680f186

	if (error.name === 'AggregateError' && error['errors'] !== undefined) {
	for (const err of error.errors) {
	tl.error(`Error while trying to get OIDC token: ${err}`);
	}
	} else {
	tl.error(`Error while trying to get OIDC token: ${error}`);
	}

In my opinion above-mentioned tl.errors should be warnings

Emitting single error on failure should be enough:

        if (retryCount >= MAX_CREATE_OIDC_TOKEN_RETRIES) {
            throw Error(tl.loc('CouldNotFetchAccessTokenForAADRetryLimitExceeded'));
        }

Examples:

transient failure but authentication worked:

real failure: