Update PublishCodeCoverage to v2

[dan-hughes]

Pull Request

Pull Request (PR) description

Update PublishCodeCoverage in azure-pipelines to v2. This is already validated in WSManDsc.

• Fixes Publish code coverage' version 1 (PublishCodeCoverageResults@1) is deprecated #551.

Task list

• The PR represents a single logical change. i.e. Cosmetic updates should go in different PRs.
• Added an entry under the Unreleased section of in the CHANGELOG.md as per format.
• Local clean build passes without issue or fail tests (build.ps1 -ResolveDependency).
• Documentation added/updated in README.md.
• Comment-based help added/updated.
• Localization strings added/updated in all localization files as appropriate.
• Unit tests added/updated. See DSC Community Testing Guidelines.
• Integration tests added/updated (where possible). See DSC Community Testing Guidelines.
• New/changed code adheres to DSC Community Style Guidelines.

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This change is 

[dan-hughes]

@johlju @gaelcolas, can someone trigger CI please.

[johlju]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[johlju]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[johlju]

Maybe third time is the charm, seems there is an issue with the gallery.

[johlju]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[johlju]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[johlju]

@gaelcolas there are intermittent error (connection issues) from PS Gallery, shall we skip those tests for PowerShellGet for now as the goal is to move to PSResourceGet (you mentioned you worked on it)?

[johlju]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[johlju]

Now this fails with the same problem as in Sampler.GitHubTasks, so there is an issue with upstream somehow.