Provisioner should update all hosts

[jess-sol]

This would be useful because when a new machine is created/provisioned, it makes sense that it be added to all the other machines' hostfiles, allowing them to communicate with it.
If a machine is reloaded and gets a new IP, and the host-manager provisioner is set to always run, it'd also be beneficial for the provisioner to update the IP on all hosts, not just the one being reloaded and possibly master.

If possible, this would be a good provisioner option, something like config.vm.provision 'hostmanager', update: "all", run: "always". I don't know how to accomplish this though, I'm new to Vagrant plugins.

[seth-reeser]

Your best bet is to align your methodology with Configuration Management best practices, your best bet is to use config.vm.provision :hostmanager in your vm definition.