Updated openstack/openstack
Project: openstack-dev/devstack  15ab23b5652e4491141d6c24000b056a5b61d846

Remove neutron ryu-plugin support

Ryu plugin was marked deprecated in Juno and will be removed for Kilo.

We (Ryu team) recommend users to migrate to ofagent, on which
we aim to concentrate our development resources by this deprecation.

Partial-Bug: #1391714
Change-Id: I1ef28818e9400664ae3d83758dc2dcf71c02f185