Add skip variable for remove test resources to support debugging (#3648)

Co-authored-by: Ben Broderick Phillips <bebroder@microsoft.com>

eng/common/TestResources/remove-test-resources.yml

@@ -34,5 +34,5 @@ steps:
         -Force `
         -Verbose
     displayName: Remove test resources
-    condition: eq(variables['CI_HAS_DEPLOYED_RESOURCES'], 'true')
+    condition: and(eq(variables['CI_HAS_DEPLOYED_RESOURCES'], 'true'), ne(variables['Skip.RemoveTestResources'], 'true'))
     continueOnError: true