- Fix $PSVersionTable.CLRVersion since it's deprecated in PS Core -> …

[linuxcrash]

• Fix $PSVersionTable.CLRVersion since it's deprecated in PS Core -> $PSVersionTable.CLRVersion property should be removed in PowerShell Core PowerShell/PowerShell#1395

Description

Import-Module fails on PS Core since there is no $PSVersionTable:CLRVersion. This is deprecated.

Related Issue

PowerShell/PowerShell#1395

Motivation and Context

This fix will default $CLRVersion to 'Unknown' and only set it to a Version if it's available in $PSVersionTable.

How Has This Been Tested?

Local execution in PowerShell Core.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[linuxcrash]

@MathieuBuisson the build failed due to issues of Merge-DscConfigData which was not touched/changed in this PR.