[RecoveryServices][SiteRecovery] CIK token serialize using System.Web.Script.Serialization.JavaScriptSerializer.

[viverm]

Description

Currently powershell for RecoveryServices.SiteRecovery is broken due to change in ciktoken serialization logic.

Reverted that instead on Newtonsoft.json serializer using System.Web.Script.Serialization.JavaScriptSerializer.

Currently service is System.Web.Script.Serialization.JavaScriptSerializer to deserialize the request Header.So changing it to newtonsoft serializer will not work.

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate change log has been updated
• 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:
  • the changes have gone through a cmdlet design review
  • the cmdlet markdown files were generated using the platyPS module