OS-563, uppercase network_type during extrattr creation
Merge pull request #34 from Vegasq/OS-563

OS-563, uppercase network_type during extrattr creation
OS-438, OS-570, IPv6 support for Infoblox
Merge pull request #29 from Vegasq/ipv6_rebase

OS-438, OS-570: IPv6 support for Infoblox