AccountPolicy/SecurityOption: Extend PowerShell v7 Compatibility for AccountPolicy/SecurityOption SecurityPolicyDsc DSC Resources

[bcwilhite]

Pull Request (PR) description

AccountPolicy/SecurityOption: Extend PowerShell v7 Compatibility for AccountPolicy/SecurityOption SecurityPolicyDsc DSC Resources

This Pull Request (PR) fixes the following issues #162

Task list

• [x] Added an entry to the change log under the Unreleased section of the file CHANGELOG.md. Entry should say what was changed and how that affects users (if applicable), and reference the issue being resolved (if applicable).
• [ ] Resource documentation added/updated in README.md.
• [ ] Resource parameter descriptions added/updated in README.md, schema.mof and comment-based help.
• [ ] Comment-based help added/updated.
• [ ] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [x] Unit tests added/updated. See DSC Community Testing Guidelines.
• [ ] Integration tests added/updated (where possible). See DSC Community Testing Guidelines.
• [x] New/changed code adheres to DSC Community Style Guidelines.

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This change is 

[codecov[bot]]

Codecov Report

Merging #163 (579d54b) into master (b29bdf8) will decrease coverage by 0%. The diff coverage is 100%.

@@          Coverage Diff          @@
##           master   #163   +/-   ##
=====================================
- Coverage      89%    89%   -1%     
=====================================
  Files           5      5           
  Lines         575    574    -1     
=====================================
- Hits          517    516    -1     
  Misses         58     58           

[gaelcolas]

Please test 3.0.0-preview0006 and open an issue if any. When we're confident that works, we can do a full release.