Packer needs to decide on a port to use for VNC when building remotely.
vnc_disable_password - This must be set to "true" when using VNC with
ESXi 6.5 or 6.7
remote_type (string) - The type of remote machine that will be used to
build this VM rather than a local desktop product. The only value accepted
for this currently is esx5. If this is not set, a desktop product will
be used. By default, this is not set.