New deployments endpoint (#2986)

* Update deployments for 1.6

* Update all deployments in docs to use the new endpoint

docs/user-guide/introspection-and-debugging.md

@@ -17,7 +17,7 @@ your pods. But there are a number of ways to get even more information about you
 For this example we'll use a Deployment to create two pods, similar to the earlier example.
 
 ```yaml
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1beta1
 kind: Deployment
 metadata:
   name: nginx-deployment
@@ -87,7 +87,7 @@ Containers:
     Environment Variables:
 Conditions:
   Type        Status
-  Ready     True 
+  Ready     True
 Volumes:
   default-token-4bcbi:
     Type:    Secret (a volume populated by a Secret)
@@ -137,7 +137,7 @@ $ kubectl describe pod nginx-deployment-1370807587-fz9sd
   Node:        /
   Labels:        app=nginx,pod-template-hash=1370807587
   Status:        Pending
-  IP:        
+  IP:
   Controllers:    ReplicaSet/nginx-deployment-1370807587
   Containers:
     nginx:
@@ -275,7 +275,7 @@ Labels:            kubernetes.io/hostname=kubernetes-node-861h
 CreationTimestamp:    Fri, 10 Jul 2015 14:32:29 -0700
 Conditions:
   Type        Status        LastHeartbeatTime            LastTransitionTime            Reason                    Message
-  Ready     Unknown     Fri, 10 Jul 2015 14:34:32 -0700     Fri, 10 Jul 2015 14:35:15 -0700     Kubelet stopped posting node status.     
+  Ready     Unknown     Fri, 10 Jul 2015 14:34:32 -0700     Fri, 10 Jul 2015 14:35:15 -0700     Kubelet stopped posting node status.
 Addresses:    10.240.115.55,104.197.0.26
 Capacity:
  cpu:        1