SqlWaitForAG: Added localization

[johlju]

Pull Request (PR) description

• Changes to SqlWaitForAG
  • Added en-US localization (issue SqlWaitForAG: Localization should change to align with HQRM modules #625).

This Pull Request (PR) fixes the following issues

• Fixes SqlWaitForAG: Localization should change to align with HQRM modules #625

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.
• 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.
• 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 #1325 into dev will increase coverage by <1%.
The diff coverage is 100%.

@@          Coverage Diff          @@
##            dev   #1325    +/-   ##
=====================================
+ Coverage    98%     98%   +<1%     
=====================================
  Files        36      36            
  Lines      4837    4855    +18     
=====================================
+ Hits       4763    4781    +18     
  Misses       74      74

[johlju]

Reviewed 4 of 4 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved