access VMware guestinfo variables in Go (library)

 The vmw-guestinfo library provides access to the guestinfo
 variables exposed to virtual machines running in VMware.
 .
 VMware is a virtualisation hypervisor, and its guestinfo
 variables contain, e.g., information on guest tools version
 or IP addresses of the guest OS. It can be compared to what
 qemu-agent provides for KVM.