Comment 8 for bug 1569404

Reviewed: https://review.openstack.org/313277
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=483c5982c020ff21ceecf1d575c2d8fad2937d6e
Submitter: Jenkins
Branch: master

commit 483c5982c020ff21ceecf1d575c2d8fad2937d6e
Author: Dmitriy Ukhlov <email address hidden>
Date: Fri May 6 08:41:07 2016 +0000

    Revert "Revert "Remove threading before process forking""

    This reverts commit b1cdba1696f5d4ec71d37a773501bd4f9e0cddb9

    Original patch was reverted because it broke neutron plugin's
    backward compatibility and needed more work.

    This patch fixes that problems:
    1) original behaviour of add_agent_status_check,
       start_periodic_l3_agent_status_check and
       start_periodic_dhcp_agent_status_check methods is deprecated but kept
       for using in third part plugins for backward compatibility
    2) new add_agent_status_check_worker, add_periodic_l3_agent_status_check
       and add_periodic_dhcp_agent_status_check method are implemented
       instead and are used for implementing plugins in neutron codebase

    Closes-Bug: #1569404

    Change-Id: I3a32a95489831f0d862930384309eefdc881d8f6