after redis master node failedover,neutron can not write redis db

[feipeng]

after redis db cluster master node failed over, using neutron command to create network or port will trigger a exception .

the reason for this is neutron server will fork sub process (worker) after main process created,sub process does not update master list for redis db cluster,only main process update master list for redis db cluster.so,there are a lack of
communication between process for neutron server.

[feipeng (feipeng1)]

this bug is fix by patch https://review.openstack.org/#/c/350358/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/350358
Committed: https://git.openstack.org/cgit/openstack/dragonflow/commit/?id=bb429aa1e81256486e73c63038ff9bbc7854e05f
Submitter: Jenkins
Branch: master

commit bb429aa1e81256486e73c63038ff9bbc7854e05f
Author: feipeng <email address hidden>
Date: Wed Aug 3 03:00:14 2016 +0000

    Fix Redis write failure after HA failover

    when there is multi neutron worker ,redis can not write
    after redis db cluster master node failed over

    Change-Id: Icc55f87ede0f751ab1edbf664ed98b240dff9595
    Closes-bug: #1609604