Healthcare APIs Powershell BYOK Updates

[iviark]

Description

Added support for BYOK for Healthcare Apis

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate ChangeLog.md file(s) has been updated:
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header -- no new version header should be added
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
    • {Please put the link here}
  • the markdown help files have been regenerated using the commands listed here

[ghost]

Thank you for your contribution iviark! We will review the pull request and get back to you soon.

[shmartel]

I'm curious about the jump to 3.0.0.

• Changing the first digit indicates a breaking change. But, I don't think this is a breaking change.
• Changing the second digit indicates a non-breaking addition of functionality (ie, a new feature)

The latter seems most appropriate here. In that case, 1.2.0 seems like a good version number. Thoughts here?

[anrudraw]

@shmartel 3.0.0 is the nuget package version released for Private Link api version: 2020-03-30. Existing versions in the file seems to be the nuget package versions for the respective api version. I referred below link before adding this version in the change log. https://www.nuget.org/packages/Microsoft.Azure.Management.HealthcareApis/

[msJinLei]

Please put new item of changelog under upcoming release

[msJinLei]

/azp run

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