Security guide suggests plugin agents require database access

[Ihar Hrachyshka]

http://docs.openstack.org/security-guide/networking/architecture.html

"The neutron-server and plugin agents require access to a database for persistent storage and access to a message queue for inter-communication."

In Neutron, only neutron-server has access to database, agents talk to neutron-server thru AMQP.

[Piyush (pirsriva)]

Yeah the line seems ambiguous. On reading, at first, even i felt that agents / server require DIRECT access to DB which is NOT the case. Better to clarify it.
Something like-
"The neutron-server and plugin agents require information in a database for persistent storage. The plugin directly accesses the DB. The agents access DB via server... "

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/424801

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/424801
Committed: https://git.openstack.org/cgit/openstack/security-doc/commit/?id=2b7b6318e70ead3e284157b186ef144b3cd3f280
Submitter: Jenkins
Branch: master

commit 2b7b6318e70ead3e284157b186ef144b3cd3f280
Author: MikeG451 <email address hidden>
Date: Tue Jan 24 18:54:52 2017 +0000

    Networking architecture of Security guide implies direct DB conn.

    Revise Networking architecture of Security guide to describe
    there is no direct database access from the agents.

    Change-Id: I45bd29c88ffc9eabfaab5f7dc9bce17d64c5ca18
    Closes-bug: #1544641