Improve kubernetes external name service support

Co-authored-by: jbdoumenjou <jb.doumenjou@gmail.com>

integration/fixtures/k8s/02-services.yml

@@ -126,3 +126,13 @@ spec:
   selector:
     app: containous
     task: whoamiudp
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: externalname-svc
+  namespace: default
+spec:
+  externalName: domain.com
+  type: ExternalName

integration/fixtures/k8s/05-ingressroutetcp.yml

@@ -13,6 +13,8 @@ spec:
     - name: whoamitcp
       namespace: default
       port: 8080
+    - name: externalname-svc
+      port: 9090
   tls:
     options:
       name: mytlsoption

integration/testdata/rawdata-crd.json

@@ -194,18 +194,44 @@
 		}
 	},
 	"tcpServices": {
-		"default-test3.route-673acf455cb2dab0b43a@kubernetescrd": {
+		"default-test3.route-673acf455cb2dab0b43a-externalname-svc-9090@kubernetescrd": {
 			"loadBalancer": {
 				"terminationDelay": 100,
 				"servers": [
 					{
-						"address": "10.42.0.4:8080"
+						"address": "domain.com:9090"
+					}
+				]
+			},
+			"status": "enabled"
+		},
+		"default-test3.route-673acf455cb2dab0b43a-whoamitcp-8080@kubernetescrd": {
+			"loadBalancer": {
+				"terminationDelay": 100,
+				"servers": [
+					{
+						"address": "10.42.0.3:8080"
 					},
 					{
 						"address": "10.42.0.8:8080"
 					}
 				]
 			},
+			"status": "enabled"
+		},
+		"default-test3.route-673acf455cb2dab0b43a@kubernetescrd": {
+			"weighted": {
+				"services": [
+					{
+						"name": "default-test3.route-673acf455cb2dab0b43a-whoamitcp-8080",
+						"weight": 1
+					},
+					{
+						"name": "default-test3.route-673acf455cb2dab0b43a-externalname-svc-9090",
+						"weight": 1
+					}
+				]
+			},
 			"status": "enabled",
 			"usedBy": [
 				"default-test3.route-673acf455cb2dab0b43a@kubernetescrd"