* Add "ProLiant BL460c Gen10 Graphics Exp"
* Add GPU expansion support for HP_ProLiant_BL460c_Gen10_Graphics_Exp
* Add ProLiant BL460c Graphics Expansion Blade support in README
* Dont crash if vendor other than HP
* Typo
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.