Correcting vnc support and other issues with ESXi template

Commit fixes problems discussed in jedi4ever/veewee#523 where the ks.cfg put the machine in maintenance mode but never brought it out of that mode, and where the vnc configuration was operating incorrectly. The first issue was preventing VMs from being added to the VMware Fusion ESXi VM, the second prevented VNC access to servers running within the ESXi instance.