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
diff --git a/manila_tempest_tests/config.py b/manila_tempest_tests/config.py
index e13d334..a2332be 100644
--- a/manila_tempest_tests/config.py
+++ b/manila_tempest_tests/config.py
@@ -30,7 +30,7 @@
                help="The minimum api microversion is configured to be the "
                     "value of the minimum microversion supported by Manila."),
     cfg.StrOpt("max_api_microversion",
-               default="2.37",
+               default="2.38",
                help="The maximum api microversion is configured to be the "
                     "value of the latest microversion supported by Manila."),
     cfg.StrOpt("region",