* Make the variables consistent across all the functions
* build_fanout instead of build_timeout
* Release machine in maas, if we're wiping the disk for re-using
* Move the for loop to check for machine being ready into a function,
so that it's re-usable
* Update some formatting fixes to README.md
* Use the maas snap for the maas-cli stuff, as there is no recent maas-cli deb
* update the way to tag a node, which now works
* put back the double ampersand for creating the VM
* The script now adds N control nodes at the beginning
* Adds 4 extra interfaces, VLANs in my environment
* Adds the VMs to MAAS, commissions them, and updates the interfaces.
* Add a function that just wipes the VM disks, for re-purposing.
This allows to release the machines in MAAS, and then re-use them
without having to re-add/commission the machines.
