[deploy doc images] apps api is now stable, use it

Signed-off-by: LinWengang <linwengang@chinacloud.com.cn>

deploy/default-backend.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: default-http-backend

deploy/provider/patch-service-with-rbac.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: nginx-ingress-controller

deploy/provider/patch-service-without-rbac.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: nginx-ingress-controller

deploy/with-rbac.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: nginx-ingress-controller

deploy/without-rbac.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: nginx-ingress-controller

docs/examples/customization/external-auth-headers/deploy/auth-service.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: demo-auth-service

docs/examples/customization/external-auth-headers/deploy/echo-service.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: demo-echo-service

docs/examples/docker-registry/deployment.yaml

@@ -5,7 +5,7 @@ metadata:
 
 ---
 
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: docker-registry

docs/examples/external-auth/oauth2-proxy.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   labels:

docs/examples/http-svc.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: http-svc

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

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: nginx-ingress-controller

images/echoheaders/echo-app.yaml

@@ -14,7 +14,7 @@ spec:
   selector:
     app: echoheaders
 ---
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: echoheaders