Fix import in v2 pool types
Fix import in v2 pool types

Closes-Bug: #1680148
Co-Authored-By: Adam Harwell <ce41dff3a5d53f27d6e7aef642fde08a22ef38e3@gmail.com>
Change-Id: I7e166244f3f136b1c25972dc985d58aba7ba8fc4

openstack/octavia,openstack/octavia,openstack/octavia