Comment 2 for bug 1745436

Reviewed: https://review.openstack.org/541478
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=53ec28a1caa2555917974c8e0eb0efffdf58dfdb
Submitter: Zuul
Branch: master

commit 53ec28a1caa2555917974c8e0eb0efffdf58dfdb
Author: Rodrigo Barbieri <email address hidden>
Date: Thu Feb 1 17:08:41 2018 -0200

    Fix Host-assisted Share Migration with IPv4+IPv6

    Previously, the Data Service allowed only 1 IP to be specified
    for the 'data_node_access_ip' config option, which prevented
    Host-assisted Share Migration to be successful on a combination
    of backends that include IPv6 and IPv4 export locations.

    To fix this, we are adding a new config option and deprecating
    the old one. The new one is named 'data_node_access_ips' and
    accepts a list of IPs. All IPs included in this list should
    correspond to interfaces on the node running the Data Service
    and will be allowed access during Host-assisted Share Migration.

    Additionally, we are improving the responsiveness of the
    Host-assisted Share Migration by using exponential waiters
    instead of polynomial. Those waiters are used when managing
    resources created by Share Migration.

    Closes-bug: #1745436
    Partial-bug: #1708491

    Change-Id: I1c0b7621ae8192f75f691987b185a4fc6a7228ce