Add new Cdn Preview API version: 2025-01-01-preview

[jessicl-ms]

ARM (Control Plane) API Specification Update Pull Request

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Purpose of this PR

What's the purpose of this PR? Check the specific option that applies. This is mandatory!
Azure CDN is adding new preview API version to support new feature: managed identity authentication for origins. This change is necessary for public preview.

The same change was reviewed in private repo: https://github.com/Azure/azure-rest-api-specs-pr/pull/21266

• New resource provider.
• New API version for an existing resource provider. (If API spec is not defined in TypeSpec, the PR should have been created in adherence to OpenAPI specs PR creation guidance).
• Update existing version for a new feature. (This is applicable only when you are revising a private preview API version.)
• Update existing version to fix OpenAPI spec quality issues in S360.
• Convert existing OpenAPI spec to TypeSpec spec (do not combine this with implementing changes for a new API version).
• Other, please clarify:
  • edit this with your clarification

Due diligence checklist

To merge this PR, you must go through the following checklist and confirm you understood
and followed the instructions by checking all the boxes:

• I confirm this PR is modifying Azure Resource Manager (ARM) related specifications, and not data plane related specifications.
• I have reviewed following Resource Provider guidelines, including
  ARM resource provider contract and
  REST guidelines (estimated time: 4 hours).
  I understand this is required before I can proceed to the diagram Step 2, "ARM API changes review", for this PR.

Additional information

Viewing API changes

For convenient view of the API changes made by this PR, refer to the URLs provided in the table
in the Generated ApiView comment added to this PR. You can use ApiView to show API versions diff.

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[openapi-pipeline-app]

Next Steps to Merge

Next steps that must be taken to merge this PR:

• ❌ This is the public specs repo main branch which is not intended for iterative development.
  You must acknowledge that you understand that after this PR is merged, you won't be able to stop your changes from being published to Azure customers.
  If this is what you intend, add PublishToCustomers label to your PR.
  Otherwise, retarget this PR onto a feature branch, i.e. with prefix release- (see aka.ms/azsdk/api-versions#release--branches).
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• ❌ The required check named Swagger ModelValidation has failed. Refer to the check in the PR's 'Checks' tab for details on how to fix it and consult the aka.ms/ci-fix guide

[openapi-pipeline-app]

Generated ApiView

Language	Package Name	ApiView Link
Go	sdk/resourcemanager/cdn/armcdn	https://apiview.dev/Assemblies/Review/5e345519a8864b018f9aae9fb7ba934c?revisionId=18e0436761424c8684548dddceeb9e47
JavaScript	@azure/arm-cdn	https://apiview.dev/Assemblies/Review/d03c7f4c0d164abd85030a921f78f9ad?revisionId=77465c9910f34ef18fa81859dbacff89
Java	azure-resourcemanager-cdn-generated	https://apiview.dev/Assemblies/Review/a857fa609d3c43b09808544a49c0693b?revisionId=61702bb83d0348edb62f29216295efe9
Python	azure-mgmt-cdn	https://apiview.dev/Assemblies/Review/554f619b5bce4305ab34ed93bfc66da9?revisionId=2c55e7db37b6453a90ff185352801fc6

[azure-sdk]

API change check

APIView has identified API level changes in this PR and created following API reviews.

Microsoft.Cdn

[jessicl-ms]

To the ARM reviewer: Swagger LintDiff failures are preexisting and not occurring on the new lines added to specification (please see 7c8d3ba#diff-87b2e146b7dea7119eb43ea9e0c81c526f6ef013c49e12bfee96a9fd4b133810 new spec added). Please add LintDiff suppression label.

[jessicl-ms]

To the ARM reviewer: ModelValidation errors also don't seem related to new lines added in specification, but reviewer may be able to understand the errors better. Also requesting ModelValidation suppression lablel

[jessicl-ms]

To the ARM Reviewer: The SDK azure-sdk-for-net failures say Duplicate Schema named 'ErrorResponse' (1 differences). This appears to be because in our legacy service specification "cdn.json", we have our own "#/definitions/ErrorResponse" and using "../../../../../common-types/resource-management/v5/types.json#/definitions/ErrorResponse". However, these errors are unrelated to the changes in current PR (which are to afdx.json) and we do not plan to modify legacy service specification defined in cdn.json. It doesn't look like this validation is required, but asking for suppression label in case it is. Otherwise, we can discuss and track updating my team's specs to resolve long-standing errors. I noticed the "brownfield" label, which I'm guess means we'll need to do something of an overhaul (?) of our specs soon anyways.