Fixed case error on IPv6 test
Fixed case error on IPv6 test

The address was supplied as `[2001:0DB8:AABB:CCDD:EEFF:0011:2233:4455]:8080` however the correct presentation format is `2001:db8:aabb:ccdd:eeff:11:2233:4455` as the Address and IP objects now correctly parse and recreate the presentation format of plaintext addresses this broke an assertion that previously passed.
oktal/pistache,oktal/pistache,oktal/pistache,oktal/rest,oktal/rest,oktal/pistache,oktal/pistache,oktal/rest,oktal/rest