Zone creation with reverse lookup fails with infoblox as backend server.
currently it is handled for default zone_format i.e 'FORWARD' and it is
not handled for 'IPV4' and 'IPV6'. This patch handles the IPV4 and IPV6
formats along with default one.
Change-Id: Iad44842fc1e3e691268182514e14a6d0f60fdc1d
Closes-Bug: #1628057
Reference: https://ipam.illinois.edu/wapidoc/objects/zone_forward.html#zone-format