Use file linked ARM template for iothub samples

[benbp]

The smoke tests frequently fail when run against Azure China Cloud, because they use a URI linked ARM template and fail to download a file from github. A temporary fix has been put up to embed the linked template in the smoke test template, but there is an outstanding feature to add support for file linking instead. This is a tracking issue to remove the embedded template once that is rolled out.

File URI feature: microsoft/vscode-azurearmtools#588
Dev tracking issue: microsoft/vscode-azurearmtools#1116
Related discussion: #17524 (comment)

Passing run: https://dev.azure.com/azure-sdk/internal/_build/results?buildId=672835&view=results

Hi @benbp. There hasn't been recent engagement on this pull request. If this is still an active work stream, please let us know by removing the no-recent-activity label. Otherwise, we'll close this out in 7 days.

Hi @benbp. There was a mistake and this issue was unintentionally flagged as a stale pull request. The label has been removed and the issue will remain active; no action is needed on your part. Apologies for the inconvenience.

[jsquire]

Closing; the IoT sample that used this template is no longer part of the smoke tests.