changes tags for tests

Start using tags CI, Feature, Scenario

test/powershell/Modules/Microsoft.PowerShell.Utility/Default-Aliases.Tests.ps1

@@ -1,6 +1,6 @@
 $removeAliasList = @("ac","compare","cpp","diff","sleep","sort","start","cat","cp","ls","man","mount","mv","ps","rm","rmdir")
 $keepAliasList = @{cd="Set-Location"},@{dir="Get-ChildItem"},@{echo="Write-output"},@{fc="format-custom"},@{kill="stop-process"},@{clear="clear-host"}
-Describe "Windows aliases do not conflict with Linux commands" {
+Describe "Windows aliases do not conflict with Linux commands" -Tags "CI" {
     foreach ($alias in $removeAliasList) {
         It "Should not have certain aliases on Linux" -Skip:$IsWindows {
             Test-Path Alias:$alias | Should Be $false