fix the vm move command: - the variable vmname was undefined in move_vm - add output for successful command execution
fix the vm move command:
- the variable vmname was undefined in move_vm
- add output for successful command execution

adamleff/knife-vsphere,mheidenr/knife-vsphere,rhadoo/knife-vsphere,dpattmann/knife-vsphere,DennisBP/knife-vsphere,swalberg/knife-vsphere,chef-partners/knife-vsphere,CoreMedia/knife-vsphere,ezrapagel/knife-vsphere,swalberg/knife-vsphere