Create codecoverage and test packages for non-windows (#9373)

Refactor the `ci.psm1` to publish the code coverage and test packages.
Allow `CodeCoverage` configuration on non-windows.

## PR Context

We plan to run code coverage on Windows, Linux and macOS. These changes are needed to unblock those runs.

.vsts-ci/linux.yml

@@ -84,3 +84,11 @@ jobs:
   parameters:
     pool: Hosted Ubuntu 1604
     dependsOn: linux_build
+
+- job: CodeCovTestPackage
+  displayName: CodeCoverage and Test Packages
+  steps:
+  - powershell: |
+      Import-Module .\tools\ci.psm1
+      New-CodeCoverageAndTestPackage
+    displayName: CodeCoverage and Test Package

.vsts-ci/mac.yml

@@ -78,3 +78,11 @@ jobs:
   parameters:
     pool: 'Hosted macOS'
     dependsOn: mac_build
+
+- job: CodeCovTestPackage
+  displayName: CodeCoverage and Test Packages
+  steps:
+  - powershell: |
+      Import-Module .\tools\ci.psm1
+      New-CodeCoverageAndTestPackage
+    displayName: CodeCoverage and Test Package

.vsts-ci/templates/windows-packaging.yml

@@ -29,6 +29,6 @@ jobs:
 
   - powershell: |
       Import-Module .\tools\ci.psm1
-      Invoke-CIAfterTest
+      New-CodeCoverageAndTestPackage
       Invoke-CIFinish -NuGetKey $(NUGET_KEY)
     displayName: Build and Test Package

build.psm1

@@ -651,19 +651,10 @@ function New-PSOptions {
     # Add .NET CLI tools to PATH
     Find-Dotnet
 
-    $ConfigWarningMsg = "The passed-in Configuration value '{0}' is not supported on '{1}'. Use '{2}' instead."
     if (-not $Configuration) {
         $Configuration = 'Debug'
-    } else {
-        switch ($Configuration) {
-            "CodeCoverage" {
-                if(-not $Environment.IsWindows) {
-                    $Configuration = "Debug"
-                    Write-Warning ($ConfigWarningMsg -f $switch.Current, $Environment.LinuxInfo.PRETTY_NAME, $Configuration)
-                }
-            }
-        }
     }
+
     Write-Verbose "Using configuration '$Configuration'"
 
     if (-not $Runtime) {

tools/ci.psm1

@@ -332,8 +332,7 @@ function Invoke-CITest
     Set-BuildVariable -Name TestPassed -Value True
 }
 
-# Implement CI 'after_test' phase
-function Invoke-CIAfterTest
+function New-CodeCoverageAndTestPackage
 {
     [CmdletBinding()]
     param()
@@ -742,9 +741,4 @@ function New-LinuxPackage
         $armPackage = Start-PSPackage @packageParams -Type tar-arm -SkipReleaseChecks
         Copy-Item $armPackage -Destination "${env:BUILD_ARTIFACTSTAGINGDIRECTORY}" -Force
     }
-
-    if ($isFullBuild)
-    {
-        New-TestPackage -Destination "${env:SYSTEM_ARTIFACTSDIRECTORY}"
-    }
 }