SPInstallPrereq: Added support for detecting updated installation of VC++ redistributable

[jensotto]

Pull Request (PR) description

Added support for detecting updated installation of Microsoft Visual C++ 2015/2017 Redistributable (x64) for SharePoint 2016 and SharePoint 2019.
Changed required version of Microsoft Visual C++ 2017 Redistributable (x64) to 14.13.26020.0 as this is the version included in the prerequisite installer.

This Pull Request (PR) fixes the following issues

• Fixes SPInstallPrereqs: Does not properly detect installed prerequisites #959

Task list

• Added an entry under the Unreleased section of the change log in the CHANGELOG.md.
  Entry should say what was changed, and how that affects users (if applicable).
• Resource documentation added/updated in README.md in the resource folder.
• Resource parameter descriptions added/updated in 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.
• Unit tests added/updated. See DSC Resource Testing Guidelines.
• Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

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This change is 

[codecov-io]

Codecov Report

Merging #964 into dev will decrease coverage by <1%.
The diff coverage is 92%.

@@          Coverage Diff          @@
##             dev    #964   +/-   ##
=====================================
- Coverage     92%     92%   -1%     
=====================================
  Files        115     115           
  Lines      11774   11789   +15     
  Branches       1       1           
=====================================
+ Hits       10937   10950   +13     
- Misses       836     838    +2     
  Partials       1       1

[ykuijs]

Reviewed 3 of 3 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved

[ykuijs]

Reviewed 1 of 1 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved