Enable IPv6 in manila(allow access)

Please read spec for design detail [1].

Add support to validate IPv6 based addresses
in allow access API when access type is IP.

[1] f7202a6cfe32a057f752a4e393f848f8a0211c36

APIImpact
DocImpact

Change-Id: Ica242007e77a7e21b2151e5fc32401b501d961b2
Partial-Implements: blueprint support-ipv6-access
5 files changed
tree: c38cab652762c8a49d168ce1813aff267efe59c0
  1. manila_tempest_tests/