azurerm_function_app_hybrid_connection and azurerm_web_app_hybrid_connection: allow use of an authorization rule for a relay in a different resource group

[stuartjbrown]

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Description

The hybrid connection send_key_name argument and associated retrieval of the send_key_value assumed that the relay/hybrid connection/authorization rule existed in the same resource group as the web app / function app. This is often not the case and this PR fixes that and includes updated/fixed acceptance tests (the _complete tests) for the same

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• azurerm_function_app_hybrid_connection and azurerm_web_app_hybrid_connection - fix the case where the relay and hybrid connection are in a different resource group to the web/function app.

This is a (please select all that apply):

• Bug Fix
• New Feature (ie adding a service, resource, or data source)
• Enhancement
• Breaking Change

Note

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[stephybun]

Thanks for this PR @stuartjbrown.

Looking at the linked issue I have some questions/suggestions around the usage. Would you mind checking out the comment I left and providing some feedback on it?

Disregard, wrong PR 😬

[stephybun]

Thanks @stuartjbrown LGTM 👍

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