Update the possible Kind values to include FHIR R4

[feordin]

A small update to allow for different Kind values as the Azure FHIR API will now support different versions of the service to be deployed.

Latest improvements:

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Contribution checklist:

• [X ] I have reviewed the documentation for the workflow.
• [X ] Validation tools were run on swagger spec(s) and have all been fixed in this PR.
• The OpenAPI Hub was used for checking validation status and next steps.

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• Service team MUST add the "WaitForARMFeedback" label if the management plane API changes fall into one of the below categories.
• adding/removing APIs.
• adding/removing properties.
• adding/removing API-version.
• adding a new service in Azure.

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[openapi-sdkautomation]

SDK Automation [Logs] (Generated from dfb0cae, Iteration 3)

Python: Azure/azure-sdk-for-python [Logs] [Diff]

• No packages generated.

Java: Azure/azure-sdk-for-java [Logs] [Diff]

• healthcareapis/resource-manager/v2018_08_20_preview [Logs]

Go: test-repo-billy/azure-sdk-for-go [Logs] [Diff]

• preview/healthcareapis/mgmt/2018-08-20-preview [Logs] [Instructions] [Generation PR]
  • preview.healthcareapis.mgmt.2018-08-20-preview.zip

JavaScript: Azure/azure-sdk-for-js [Logs] [Diff]

• @azure/arm-healthcareapis [Logs] [Instructions]
  • azure-arm-healthcareapis-1.0.0.tgz

[AutorestCI]

Automation for azure-sdk-for-python

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-python#5581

[AutorestCI]

Automation for azure-sdk-for-go

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-go#5399

[azuresdkci]

Can one of the admins verify this patch?