Several minor fixes:
- raid_array check should return an empty array, not NoneType
- not all systems will have IPv6 defined, handle this case
- Vendor Supermicro was incomplete.
* 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