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

deploy/provider/aws/service-l4.yaml

@@ -15,6 +15,7 @@ spec:
   type: LoadBalancer
   selector:
     app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx
   ports:
   - name: http
     port: 80

deploy/provider/aws/service-l7.yaml

@@ -19,6 +19,7 @@ spec:
   type: LoadBalancer
   selector:
     app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx
   ports:
   - name: http
     port: 80

deploy/provider/aws/service-nlb.yaml

@@ -15,6 +15,7 @@ spec:
   type: LoadBalancer
   selector:
     app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx
   ports:
   - name: http
     port: 80

deploy/provider/baremetal/service-nodeport.yaml

@@ -6,7 +6,6 @@ metadata:
   labels:
     app.kubernetes.io/name: ingress-nginx
     app.kubernetes.io/part-of: ingress-nginx
-
 spec:
   type: NodePort
   ports:
@@ -20,3 +19,4 @@ spec:
     protocol: TCP
   selector:
     app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx

deploy/provider/cloud-generic.yaml

@@ -11,6 +11,7 @@ spec:
   type: LoadBalancer
   selector:
     app.kubernetes.io/name: ingress-nginx
+    app.kubernetes.io/part-of: ingress-nginx
   ports:
   - name: http
     port: 80