azurerm_linux_web_app/azurerm_windows_web_app - Support for Storage Mount add "Deployment Slot Setting"

[nnstt1]

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Description

Add support for the 'Deployment Slot Setting' property of storage accounts mounted to Azure Web Apps (Linux/Windows).
This is achieved by adding the azure_storage_config_names property to the sticky_settings block.

Relevant documentation:

• https://learn.microsoft.com/en-us/rest/api/appservice/web-apps/update-slot-configuration-names?view=rest-appservice-2023-01-01
• https://learn.microsoft.com/en-us/azure/app-service/configure-connect-to-azure-storage?tabs=basic%2Cportal&pivots=container-linux

PR Checklist

• I have followed the guidelines in our Contributing Documentation.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
• I have checked if my changes close any open issues. If so please include appropriate closing keywords below.
• I have updated/added Documentation as required written in a helpful and kind way to assist users that may be unfamiliar with the resource / data source.
• I have used a meaningful PR title to help maintainers and other users understand this change and help prevent duplicate work.
  For example: “resource_name_here - description of change e.g. adding property new_property_name_here”

Changes to existing Resource / Data Source

• I have added an explanation of what my changes do and why I'd like you to include them (This may be covered by linking to an issue above, but may benefit from additional explanation).
• I have written new tests for my resource or datasource changes & updated any relevent documentation.
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• (For changes that include a state migration only). I have manually tested the migration path between relevant versions of the provider.

Testing

• My submission includes Test coverage as described in the Contribution Guide and the tests pass. (if this is not possible for any reason, please include details of why you did or could not add test coverage)

• linux_web_app_resource_test.go

  

• windows_web_app_resource_test.go

  

Change Log

Below please provide what should go into the changelog (if anything) conforming to the Changelog Format documented here.

• azurerm_linux_web_app/azurerm_windows_web_app - support for the azure_storage_config_names property [azurerm_linux_web_app/azurerm_windows_web_app - Support for Storage Mount add "Deployment Slot Setting" #26021]

This is a (please select all that apply):

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

Related Issue(s)

Fixes #23845

Note

If this PR changes meaningfully during the course of review please update the title and description as required.

[rcskosir]

Hi @nnstt1 👋,
Thank you for taking the time to open this PR and contributing to the repository. Apologies for the delay in getting this PR reviewed.
Sticky setting can be complex and we want to ensure that we investigate this change thoroughly.

Please bear with us as we work through this, and we’ll get back to you as soon as possible with more feedback.