ryu: minor updates for Ryu upstream change

Since Ryu upstream changed configuration format, which is user visible.
Plus minor updates.

Fixes bug #1132992
Change-Id: I531360f3e0470916144d2c409066f1a8c75ec26f
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Allow qpid to be selected as AMQP provider on precise

Fixes bug 1137667

Previously the auth/sasl config for qpidd was broken, and the
openstack services using RPC were not properly configured.

Now we ensure that:

- the admin qpid_username/password are configured for all services
  (as the qpidd ACL config denies all access to non-admin users)

- the PLAIN sasl mechanism is configured for qpidd (otherwise the
  qpid_password is not propogated)

- the qpidd process has read permission on the sasl DB (otherwise
  thw admin user/apss cannot be verified even if set)

Change-Id: Id6bd675841884451b78f257afe786f494a03c0f7
Merge "Allow qpid to be selected as AMQP provider on precise"
Merge "ryu: minor updates for Ryu upstream change"