Update e2e operator test

The e2e test was dependant on the operator flag being enabled by defualt.
Now the test will set the operator flag to true temporarily, run the test, and reset to it's original value.

test/e2e/operator.go

@@ -562,6 +562,21 @@ var _ = Describe("ARO Operator - dnsmasq", func() {
 		return names
 	}
 
+	// test regardless of the operator flag setting, then set back to original value after tests
+	enableOperatorFlag := func(g Gomega, ctx context.Context) func(context.Context) {
+		co, err := clients.AROClusters.AroV1alpha1().Clusters().Get(ctx, "cluster", metav1.GetOptions{})
+		if kerrors.IsNotFound(err) {
+			Skip("skipping tests as aro-operator is not deployed")
+		}
+
+		originalFlag := co.Spec.OperatorFlags["aro.dnsmasq.enabled"]
+		co.Spec.OperatorFlags["aro.dnsmasq.enabled"] = "true"
+
+		return func(ctx context.Context) {
+			co.Spec.OperatorFlags["aro.dnsmasq.enabled"] = originalFlag
+		}
+	}
+
 	BeforeEach(func(ctx context.Context) {
 		By("Create custom MachineConfigPool")
 		_, err := clients.MachineConfig.MachineconfigurationV1().MachineConfigPools().Create(ctx, &customMcp, metav1.CreateOptions{})
@@ -571,6 +586,8 @@ var _ = Describe("ARO Operator - dnsmasq", func() {
 	It("must handle the lifetime of the `99-${MCP}-custom-dns MachineConfig for every MachineConfigPool ${MCP}", func(ctx context.Context) {
 		By("creating an ARO DNS MachineConfig when creating a custom MachineConfigPool")
 		Eventually(func(g Gomega, ctx context.Context) {
+			resetFlag := enableOperatorFlag(g, ctx)
+			defer resetFlag(ctx)
 			machineConfigs := getMachineConfigNames(g, ctx)
 			g.Expect(machineConfigs).To(ContainElement(mcName))