Updated v1beta1 to v1 as its deprecated (kubernetes#7308)

Author: kundan2707

docs/examples/affinity/cookie/ingress.yaml

@@ -1,4 +1,4 @@
-apiVersion: networking.k8s.io/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: nginx-test

docs/examples/auth/client-certs/ingress.yaml

@@ -1,4 +1,4 @@
-apiVersion: networking.k8s.io/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   annotations:

docs/examples/customization/configuration-snippets/ingress.yaml

@@ -1,4 +1,4 @@
-apiVersion: networking.k8s.io/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: nginx-configuration-snippet

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

@@ -43,7 +43,7 @@ spec:
   selector:
     k8s-app: demo-echo-service
 ---
-apiVersion: networking.k8s.io/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: public-demo-echo-service
@@ -61,7 +61,7 @@ spec:
           servicePort: 80
         path: /
 ---
-apiVersion: networking.k8s.io/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: secure-demo-echo-service

docs/examples/tls-termination/README.md

@@ -11,7 +11,7 @@ You need a [TLS cert](../PREREQUISITES.md#tls-certificates) and a [test HTTP ser
 Create a `ingress.yaml` file.
 
 ```yaml
-apiVersion: networking.k8s.io/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: nginx-test

docs/user-guide/fcgi-services.md

@@ -60,7 +60,7 @@ data:
 
 ---
 
-apiVersion: networking.k8s.io/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   annotations:

docs/user-guide/nginx-configuration/annotations.md

@@ -394,7 +394,7 @@ For more information please see [the `server_name` documentation](http://nginx.o
 Using the annotation `nginx.ingress.kubernetes.io/server-snippet` it is possible to add custom configuration in the server configuration block.
 
 ```yaml
-apiVersion: networking.k8s.io/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   annotations:

docs/user-guide/third-party-addons/opentracing.md

@@ -168,7 +168,7 @@ In the Zipkin interface we can see the details:
 
     # Apply the Ingress Resource
     $ echo '
-      apiVersion: networking.k8s.io/v1beta1
+      apiVersion: networking.k8s.io/v1
       kind: Ingress
       metadata:
         name: echo-ingress