Comment 2 for bug 1401095

Reviewed: https://review.openstack.org/143297
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=c6d0e45c9fb07fab4edf9be3a11ca00c8ffd0b84
Submitter: Jenkins
Branch: master

commit c6d0e45c9fb07fab4edf9be3a11ca00c8ffd0b84
Author: Yoni Shafrir <email address hidden>
Date: Wed Dec 17 09:25:55 2014 +0200

    Fixed L3 agent manual scheduling for HA routers

    When a router is manually scheduled we check if a router can be scheduled
    to the given L3 agent. In this check we were missing handling for
    HA router, instead we raised an exception as a last resort.

    In addition, we create an HA port on the newly scheduled agent.
    The HA port is created within the router's namespace on that agent.
    Previously when manually scheduling this was not done at all.

    This patch takes care of HA routers by allowing them to be
    manually scheduled to a L3 agent if the router is not already
    scheduled to that given L3 agent.

    The patch also adds an HA port in the router's namespace on the newly
    scheduled L3 agent.

    In addition the patch also removes the 'max_l3_agents_per_router'
    enforcement when manually schedulling a router on a agent. This is
    done as the admin should be able to schedule a router on an agent
    if he desires, moreover this is consistent with the
    'min_l3_agents_per_router' that is not enforced when manually
    descheduling a router from an agent.

    Co-Authored-By: gong yong sheng <gong.yongsheng@99cloud.net>
    Co-Authored-By: Nir Magnezi <email address hidden>
    Closes-Bug: #1401095

    Change-Id: I1e2d281cfec50e7fff4ec68659882fc7c0cb4a29