Remove old header and add resolution field (#2072)

* Remove old header

* add resolution field

content/docs/tasks/traffic-management/egress-gateway/index.md

@@ -5,8 +5,6 @@ weight: 43
 keywords: [traffic-management,egress]
 ---
 
-> This task uses the new [v1alpha3 traffic management API](/blog/2018/v1alpha3-routing/). The old API has been deprecated and will be removed in the next Istio release. If you need to use the old version, follow the docs [here](https://archive.istio.io/v0.7/docs/tasks/traffic-management/). Note that this task introduces a new concept, namely Egress Gateway, that was not present in previous Istio versions.
-
 The [Control Egress Traffic](/docs/tasks/traffic-management/egress/) task demonstrates how external (outside the Kubernetes cluster) HTTP and HTTPS services can be accessed from applications inside the mesh. A quick reminder: by default, Istio-enabled applications are unable to access URLs outside the cluster. To enable such access, a [service entry](/docs/reference/config/istio.networking.v1alpha3/#ServiceEntry) for the external service must be defined, or, alternatively, [direct access to external services](/docs/tasks/traffic-management/egress/#calling-external-services-directly) must be configured.
 
 The [TLS Origination for Egress Traffic](/docs/tasks/traffic-management/egress-tls-origination/) task demonstrates how to allow the applications to send HTTP requests to external servers that require HTTPS.

content/docs/tasks/traffic-management/egress-tls-origination/index.md

@@ -69,6 +69,7 @@ Note that you use a wildcard `*` in your `hosts` definition: `*.cnn.com`. Using
       - number: 443
         name: https-port
         protocol: HTTPS
+      resolution: NONE
     EOF
     {{< /text >}}
 

content/docs/tasks/traffic-management/egress/index.md

@@ -61,6 +61,7 @@ from within your Istio cluster. In this task you access
       - number: 80
         name: http
         protocol: HTTP
+      resolution: DNS
     EOF
     {{< /text >}}
 
@@ -79,6 +80,7 @@ from within your Istio cluster. In this task you access
       - number: 443
         name: https
         protocol: HTTPS
+      resolution: DNS
     EOF
     {{< /text >}}