lack of DHCP RPC API support of ryu plugin

[Yoshihiro Kaneko]

dhcp-agent does not work with ryu plugin.
ryu interface driver for dhcp-agent was added at Change I3f5fbe86, but DHCP RPC API support is lacking.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/11853

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/11853
Committed: http://github.com/openstack/quantum/commit/ac789d8c1a3bc20c94144f7347cafc00e4181b07
Submitter: Jenkins
Branch: master

commit ac789d8c1a3bc20c94144f7347cafc00e4181b07
Author: Yoshihiro Kaneko <email address hidden>
Date: Wed Aug 22 04:19:58 2012 +0000

    Add DHCP RPC API support to Ryu plugin

    It is necessary to add DHCP RPC API support to Ryu plugin to use
    DHCP with Ryu plugin.

    Fixes bug 1040398

    Change-Id: I00caf6f36025a21d10b8a96c5f7272d12393c277
    Signed-off-by: Yoshihiro Kaneko <email address hidden>