Skip TestFQDNCacheMinTTL if cluster has Windows Nodes. Fixes antrea-i…

…o#6891 The TestFQDNCacheMinTTL e2e test currently does not support Windows. We skip it if any Node in the test cluster is a Windows Node, which is also consistent with other AntreaPolicy e2e tests.

As @antoninbas suggested, I have relocated the skipX condition to the beginning of TestFQDNCacheMinTTL. Now, the skip condition will execute before any subset of TestFQDNCacheMinTTL, making testWithFQDNCacheMinTTL shorter and possibly more efficient.

test/e2e/antreapolicy_test.go

@@ -5308,12 +5308,13 @@ func TestFQDNCacheMinTTL(t *testing.T) {
 	skipIfNotIPv4Cluster(t)
 	skipIfIPv6Cluster(t)
 	skipIfNotRequired(t, "mode-irrelevant")
-
+	
 	t.Run("minTTLUnset", func(t *testing.T) { testWithFQDNCacheMinTTL(t, 0) })
 	t.Run("minTTL20s", func(t *testing.T) { testWithFQDNCacheMinTTL(t, 20) })
 }
 
 func testWithFQDNCacheMinTTL(t *testing.T, fqdnCacheMinTTL int) {
+
 	const (
 		testFQDN = "fqdn-test-pod.lfx.test"
 		dnsPort  = 53