feat: add support for multiple clusters in mgmt domain

[burnsjared0415]

Summary

Added support to PowerManagement-ManagmentDomain.ps1 for more than one cluster in management domain for shut down and start up.

Type

• [ ] Bugfix
• [x] Enhancement or Feature
• [ ] Code Style or Formatting
• [ ] Documentation
• [ ] Refactoring
• [ ] Chore
• [ ] Other Please describe:

Breaking Changes?

• [ ] Yes, there are breaking changes.
• [x] No, there are no breaking changes.

Test and Documentation

• [x] Tests have been completed.
• [x] Documentation has been added or updated.

Issue References

Closes #41

Additional Information

[vmwclabot]

@burnsjared0415, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit 0e1445d371f03f248d656982ac4ade9283c7db65 must be signed by jared.burns@broadcom.com

[vmwclabot]

@burnsjared0415, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit 0e1445d371f03f248d656982ac4ade9283c7db65 must be signed by jared.burns@broadcom.com

[github-actions[bot]]

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