Fixup #2970: Add Missing Label app.kubernetes.io/part-of: ingress-nginx

-    Add missing label `app.kubernetes.io/part-of: ingress-nginx` for deploy example
-    Update new labels for docs/deploy and docs/examples
-    Update new labels for test/e2e and test/manifests
-    Update new labels for images/nginx

Also close #3001

docs/examples/static-ip/nginx-ingress-controller.yaml

@@ -3,16 +3,19 @@ kind: Deployment
 metadata:
   name: nginx-ingress-controller
   labels:
-    k8s-app: nginx-ingress-controller
+    app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx
 spec:
   replicas: 1
   selector:
     matchLabels:
-      k8s-app: nginx-ingress-controller
+      app.kubernetes.io/name: ingress-nginx
+      app.kubernetes.io/part-of: ingress-nginx
   template:
     metadata:
       labels:
-        k8s-app: nginx-ingress-controller
+        app.kubernetes.io/name: ingress-nginx
+        app.kubernetes.io/part-of: ingress-nginx
     spec:
       # hostNetwork makes it possible to use ipv6 and to preserve the source IP correctly regardless of docker configuration
       # however, it is not a hard dependency of the nginx-ingress-controller itself and it may cause issues if port 10254 already is taken on the host

docs/examples/static-ip/static-ip-svc.yaml

@@ -4,7 +4,8 @@ kind: Service
 metadata:
   name: nginx-ingress-lb
   labels:
-    app: nginx-ingress-lb
+    app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx
 spec:
   externalTrafficPolicy: Local
   type: LoadBalancer
@@ -18,5 +19,5 @@ spec:
     targetPort: 443
   selector:
     # Selects nginx-ingress-controller pods
-    k8s-app: nginx-ingress-controller
-
+    app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx