Add ability to create Virtual Machine in netbox with an auto-detecting feature (currently VirtualBox, Xen, Hyper-V, VMWare, GCP)
One caveat, I made the choice not to report the disk as Netbox model allow only one size but VM often have multiples.
Also, lot of code refactoring to be able to use create_or_update function style, fixing a lot of corner case
* rework network part by ignoring devices and ip from config file
* update config file
* associate slave device to bond device with Netbox LAG
* update README
* make sure every interface attribute is ok
* some fixes after test
* tox
* add ipmi feature
* fix bug in LAG
* ipmi class
* update README
* network update
* delete print
* update README