webservice URL location part is not consistent in ACIWebservice

Hi,

Last week I noticed that the URL of a deployed aciwebservice is not the same as before, ie., location part was not the same as before. It was always `http://xxx-classification.northeurope.azurecontainer.io/score`, but now it is `http://xxx-classification.westus.azurecontainer.io/score`. Based on documentation, [The Azure region to deploy this Webservice to. If not specified the Workspace location will be used.](https://docs.microsoft.com/en-us/python/api/azureml-core/azureml.core.webservice.aci.aciwebservice?view=azure-ml-py#deploy-configuration-cpu-cores-none--memory-gb-none--tags-none--properties-none--description-none--location-none--auth-enabled-none--ssl-enabled-none--enable-app-insights-none--ssl-cert-pem-file-none--ssl-key-pem-file-none--ssl-cname-none--dns-name-label-none--primary-key-none--secondary-key-none--collect-model-data-none--cmk-vault-base-url-none--cmk-key-name-none--cmk-key-version-none--vnet-name-none--subnet-name-none-) . My workspace is `northeurope` and `location` field was not set.

Why is my aciwebservice deployed in `westus` ?

We have CICD pipelines running for our repo. Sometimes we manually trigger the jobs. The pipeline did not break but our applications failed because of URL change.

レポートでは、ACIWebservice のデプロイ構成と省略された location フィールドについて言及されていますが、リポジトリのファイルもテストも示されていません。まず、location が未設定の場合に SDK が ACI リージョンをどのように選択するかを追跡し、northeurope の workspace でデプロイを再現してください。選択されたリージョンが文書化されたデフォルトに従い、URL の動作が安定して文書化されていれば完了です。

索引モデルが issue の本文から書いたものです。