Index all examples and fix their titles

docs/examples/external-auth/dashboard-ingress.yaml

@@ -1,38 +0,0 @@
-apiVersion: extensions/v1beta1
-kind: Ingress
-metadata:
-  annotations:
-    nginx.ingress.kubernetes.io/auth-signin: https://$host/oauth2/start
-    nginx.ingress.kubernetes.io/auth-url: https://$host/oauth2/auth
-  name: external-auth-oauth2
-  namespace: kube-system
-spec:
-  rules:
-  - host: __INGRESS_HOST__
-    http:
-      paths:
-      - backend:
-          serviceName: kubernetes-dashboard
-          servicePort: 80
-        path: /
-
----
-
-apiVersion: extensions/v1beta1
-kind: Ingress
-metadata:
-  name: oauth2-proxy
-  namespace: kube-system
-spec:
-  rules:
-  - host: __INGRESS_HOST__
-    http:
-      paths:
-      - backend:
-          serviceName: oauth2-proxy
-          servicePort: 4180
-        path: /oauth2
-  tls:
-  - hosts:
-    - __INGRESS_HOST__
-    secretName: __INGRESS_SECRET__