Comment 4 for bug 1614766

Reviewed: https://review.openstack.org/403672
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=e41cf43fc19458e672906c777d6656f08fdcd3f4
Submitter: Jenkins
Branch: stable/newton

commit e41cf43fc19458e672906c777d6656f08fdcd3f4
Author: Isaku Yamahata <email address hidden>
Date: Thu Aug 18 15:32:12 2016 -0700

    ovsdb: don't erase existing ovsdb managers

    The current existing agent erases already set ovsdb managers
    entries. In some use cases, cloud admin sets ovsdb managers.
    eg, for SDN controllers or monitoring purpose. Neutron agent
    shouldn't unconditionally erase the existing ovsdb managers.

    This patch implements a new api add_manager (along with
    get_manager and remove_manager) to the ovsdb api which will
    allow us to configure a manager on a switch without overriding
    the existing managers.

    Closes-Bug: #1614766
    Change-Id: Ibf9bd02fac3070d166546cac478ef984e4e43f28
    Co-Authored-By: sridhargaddam <email address hidden>
    Co-Authored-By: Terry Wilson <email address hidden>
    (cherry picked from commit 7d42176853c80545df46c3fa593d7816f12e57cf)