Comment 6 for bug 1722417

Reviewed: https://review.openstack.org/510718
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=a42f58de50c84235f649d957ac925780d365e3db
Submitter: Zuul
Branch: master

commit a42f58de50c84235f649d957ac925780d365e3db
Author: Feilong Wang <email address hidden>
Date: Tue Oct 10 14:30:03 2017 +1300

    Allow to skip API calls to Neutron in instance tables

    Now instance panel is sending API calls to Neutron to get the addresses
    info about network. It take some time until Nova network info cache is
    synced when IP address operation like floating IP association is made
    in Neutron. The API calls to Neutron exist from this reason.

    However, it retrieves a full list of port, so it can potentially leads
    to performance issues in large deployments. This commit adds a setting
    flag to control whether API calls to Neutron is used or skipped in
    the project instance table.

    This commits drops a call of servers_update_addresses() in the admin
    instance table. In the admin instance table there is no need to retrieve
    IP addresses from neutron because the main purpose of the admin panel is
    to see all instances and IP addresses in nova network info cache will be
    synced soon.

    Closes-Bug: #1722417
    Co-Authored-By: Akihiro Motoki <email address hidden>
    Change-Id: Ie16784eb6352f70ab644dc8b6ea03fc6a881d3f9