AdfsProperties: Fix Issues with unavailable Properties in Windows Server 2016

[X-Guardian]

Pull Request (PR) description

This PR fixes issues with unavailable properties on Windows Server 2016.

This Pull Request (PR) fixes the following issues

• Fixes #51

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.
• [x] Resource parameter descriptions added/updated in README.md, schema.mof and comment-based help.
• [ ] Comment-based help added/updated.
• [x] 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 #52 (fdf8194) into master (1d0416c) will decrease coverage by 0%. The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #52   +/-   ##
=====================================
- Coverage      98%    98%   -1%     
=====================================
  Files          16     16           
  Lines        2113   2080   -33     
=====================================
- Hits         2077   2044   -33     
  Misses         36     36