[ubuntu] Pester tests for dotnet sdk, cmd tools and codeql (#2335)

* dotnet cmd codeql tests

* fixed dotnet tests, added codeql to toolset

* changed codeql version to wildcard

* removed unused import and a test call

* tmp

* lowercase file name

* removed sourcing invoke-tests

Co-authored-by: Leonid Lapshin <originalnoe-nazvanie@yandex.ru>

images/linux/scripts/tests/Apt.Tests.ps1

@@ -0,0 +1,14 @@
+Import-Module "$PSScriptRoot/../helpers/Common.Helpers.psm1"
+
+$cmd = (Get-ToolsetContent).apt.cmd_packages
+
+Describe "Apt" {
+
+    $testCases = $cmd | ForEach-Object {
+        @{ toolName = $_ }
+    }
+
+    It "<toolName> is available" -TestCases $testCases {
+        (Get-Command -Name $toolName).CommandType | Should -BeExactly "Application"
+    }
+}