Wizard: Add unleash flag and update tests

This gates the step behind an unleash flag and updates the existing tests so they pass with the new step added.

src/Components/CreateImageWizard/steps/Firewall/index.tsx

@@ -0,0 +1,16 @@
+import React from 'react';
+
+import { Text, Form, Title } from '@patternfly/react-core';
+
+const FirewallStep = () => {
+  return (
+    <Form>
+      <Title headingLevel="h1" size="xl">
+        Firewall
+      </Title>
+      <Text>Customize firewall settings for your image.</Text>
+    </Form>
+  );
+};
+
+export default FirewallStep;