HAHT - push data persistence

[Eric K]

Change datasource_driver.py:PushedDataSourceDriver class to support persistence of pushed data. Corresponding DB changes also needed.

Please see spec and blueprint for more information.
https://github.com/openstack/congress-specs/blob/master/specs/newton/high-availability-design.rst
https://blueprints.launchpad.net/congress/+spec/high-availability-design

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/348712

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/348712
Committed: https://git.openstack.org/cgit/openstack/congress/commit/?id=bcf4a48958dba73f371fae6c14d5ca4fcf8d1907
Submitter: Jenkins
Branch: master

commit bcf4a48958dba73f371fae6c14d5ca4fcf8d1907
Author: Eric K <email address hidden>
Date: Thu Jul 28 17:01:40 2016 -0700

    HAHT - persist pushed data

    Use optional config parameter persist_data=true (case insensitive)
    to enable persisting data. eg.
    $ openstack congress datasource create push push
            --config persist_data=True

    Closes-Bug: 1600015
    Partially implements blueprint: high-availability-design

    Change-Id: I2dd4fb1c4baf61281bd26ec64d7f02fedae18ac1

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/congress 4.0.0.0b3 development milestone.