Commits on Apr 26, 2022

1. Add TrafficControl API …

   TrafficControl is a feature which allows mirroring or redirecting the
   traffic Pods send or receive. It enables users to monitor and analyze
   Pod traffic, and to enforce custom network protections for Pods with
   fine-grained control over network traffic.
   
   This patch adds types and CRD for TrafficControl API.
   
   Examples:
   
   1. Mirror Pods (web=app) ingress traffic to a VXLAN tunnel
   ```
   apiVersion: crd.antrea.io/v1alpha2
   kind: TrafficControl
   metadata:
     name: mirror-web-app
   spec:
     appliedTo:
       podSelector:
         matchLabels:
           app: web
     direction: Ingress
     action: Mirror
     targetPort:
       vxlan:
         remoteIP: 1.1.1.1
   ```
   
   2. Redirect Pods (web=app) traffic in both direction to OVS internal
   port firewall0 and expect the traffic to re-enter OVS via another OVS
   internal port firewall1 if they are not dropped.
   ```
   apiVersion: crd.antrea.io/v1alpha2
   kind: TrafficControl
   metadata:
     name: redirect
   spec:
     appliedTo:
       podSelector:
         matchLabels:
           role: web
     direction: Ingress
     action: Redirect
     targetPort:
       ovsInternal:
         name: firewall0
     returnPort:
       ovsInternal:
         name: firewall1
   ```
   
   For antrea-io#3324
   
   Signed-off-by: Quan Tian <[email protected]>

   

   tnqn committed Apr 26, 2022
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