Skip few tests in RuleSuppression for Linux

We skip them because the parser throws error while parsing DSC configuration on PowerShellCore on Linux.

Author: Kapil Borle

Tests/Engine/RuleSuppression.tests.ps1

@@ -102,13 +102,10 @@ function SuppressPwdParam()
         }
     }
 
-    if (($PSVersionTable.PSVersion -ge [Version]'5.0'))
-    {
-        Context "Rule suppression within DSC Configuration definition" {
-            It "Suppresses rule" {
-                $suppressedRule = Invoke-ScriptAnalyzer -ScriptDefinition $ruleSuppressionInConfiguration -SuppressedOnly
-                $suppressedRule.Count | Should Be 1
-            }
+    Context "Rule suppression within DSC Configuration definition" {
+        It "Suppresses rule" -skip:((Test-PSEditionCoreCLRLinux) -or ($PSVersionTable.PSVersion -ge [Version]'5.0')) {
+            $suppressedRule = Invoke-ScriptAnalyzer -ScriptDefinition $ruleSuppressionInConfiguration -SuppressedOnly
+            $suppressedRule.Count | Should Be 1
         }
     }