Add node.hostname to Go template placeholder options
Add node.hostname to Go template placeholder options

The following command works on Docker CE 18.03.1-ce so .node.hostname should be included in the doc:

`docker service create --name myservice --hostname="{{.Node.Hostname}}-{{.Service.Name}}" busybox top`

This does not yet work however on the latest EE release, so I'd like some help knowing how best to add a note indicating this on the page.
thaJeztah/docker.github.io,docker/docker.github.io,anweiss/docker.github.io,londoncalling/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,docker/docker.github.io,docker/docker.github.io,anweiss/docker.github.io,thaJeztah/docker.github.io,johnstep/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,docker/docker.github.io,londoncalling/docker.github.io,londoncalling/docker.github.io,johnstep/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,johnstep/docker.github.io,londoncalling/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io