Fixe issue #299 and correct PR #306

[NicolasBn]

Pull Request

Pull Request (PR) description

Fixe issue #299 and correct PR #306.

Fixed

• Removed $BuiltModuleSubdirectory definition in the begin bloc of build.ps1 template (issue #299).

• Added pester tests for Set-SamplerTaskVariable.ps1.

Task list

• [x] The PR represents a single logical change. i.e. Cosmetic updates should go in different PRs.
• [x] Added an entry under the Unreleased section of in the CHANGELOG.md as per format.
• [x] Local clean build passes without issue or fail tests (build.ps1 -ResolveDependency).
• [ ] 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 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[bot]]

Codecov Report

Merging #310 (2afd630) into main (5a70545) will increase coverage by 0%. The diff coverage is 100%.

@@         Coverage Diff         @@
##           main   #310   +/-   ##
===================================
  Coverage    28%    29%           
===================================
  Files        38     38           
  Lines      1931   1931           
===================================
+ Hits        557    560    +3     
+ Misses     1374   1371    -3     

Impacted Files	Coverage Δ
Sampler/scripts/Set-SamplerTaskVariable.ps1	98% <100%> (+5%)	:arrow_up: