Ensure disableHTTP2 works with k8s crd

pkg/provider/kubernetes/crd/fixtures/with_servers_transport.yml

@@ -93,6 +93,7 @@ spec:
   serverName: "test"
   insecureSkipVerify: true
   maxIdleConnsPerHost: 42
+  disableHTTP2: true
   rootCAsSecrets:
   - root-ca0
   - root-ca1

pkg/provider/kubernetes/crd/kubernetes.go

@@ -344,6 +344,7 @@ func (p *Provider) loadConfigurationFromCRD(ctx context.Context, client Client)
 			InsecureSkipVerify:  serversTransport.Spec.InsecureSkipVerify,
 			RootCAs:             rootCAs,
 			Certificates:        certs,
+			DisableHTTP2:        serversTransport.Spec.DisableHTTP2,
 			MaxIdleConnsPerHost: serversTransport.Spec.MaxIdleConnsPerHost,
 			ForwardingTimeouts:  forwardingTimeout,
 		}

pkg/provider/kubernetes/crd/kubernetes_test.go

@@ -3505,6 +3505,7 @@ func TestLoadIngressRoutes(t *testing.T) {
 								{CertFile: "TESTCERT3", KeyFile: "TESTKEY3"},
 							},
 							MaxIdleConnsPerHost: 42,
+							DisableHTTP2:        true,
 							ForwardingTimeouts: &dynamic.ForwardingTimeouts{
 								DialTimeout:           types.Duration(42 * time.Second),
 								ResponseHeaderTimeout: types.Duration(42 * time.Second),