Merge pull request #2735 from hashicorp/f-no_host_uuid-true

Default no_host_uuid to true instead of false

website/source/docs/agent/configuration/client.html.md

@@ -110,8 +110,9 @@ client {
   parallel destroys allowed by the garbage collector. This value should be
   relatively low to avoid high resource usage during garbage collections.
 
-- `no_host_uuid` `(bool: false)` - Force the UUID generated by the client to be
-  randomly generated and not be based on the host's UUID.
+- `no_host_uuid` `(bool: true)` - By default a random node UUID will be
+  generated, but setting this to `false` will use the system's UUID. Before
+  Nomad 0.6 the default was to use the system UUID.
 
 ### `chroot_env` Parameters