[Az.DataProtection] Added Grant permissions for all workloads

[hiaga]

Description

This PR is for adding automatic assignment of necessary permissions for configuring backup of v2 workloads

Checklist

• [x] I have read the Submitting Changes section of CONTRIBUTING.md
• [x] The title of the PR is clear and informative
• [x] 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
• [x] The PR does not introduce breaking changes
• [x] If applicable, the changes made in the PR have proper test coverage
• [x] For public API changes to cmdlets:
  • [x] a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
    • {Please put the link here}
  • [x] the markdown help files have been regenerated using the commands listed here

[isra-fel]

Hi @hiaga I've marked this PR as draft for bookkeeping reason. Please click the "Ready for review" button when you've done working on it. Thanks.

[NoriZC]

Hi @hiaga , as this PR hasn't been taken care of for long, could you please check and close it? Thanks!