Add CI tag to SemanticVersion.Tests.ps1

test/powershell/engine/SemanticVersion.Tests.ps1

@@ -1,7 +1,7 @@
 using namespace System.Management.Automation
 using namespace System.Management.Automation.Language
 
-Describe "SemanticVersion api tests" {
+Describe "SemanticVersion api tests" -Tags 'CI' {
     Context "constructing valid versions" {
         It "string argument constructor" {
             $v = [SemanticVersion]::new("1.2.3-alpha")
@@ -184,4 +184,4 @@ Describe "SemanticVersion api tests" {
             { [SemanticVersion]::new([Version]::new("1.2")) } | Should Throw # PSArgumentException
         }
     }
-}
+}