Updated openstack/openstack
Project: openstack/taskflow  a4f2a12dc5f6e8bb589b609dcc38ff11c16a34fa

Reject WBE messages if they can't be put in an ack state

Attempt to reject messages that could not be acknowledged
so that those messages could be resent (requeueing is not
appropriate since it will just cause the message to come
back).

Fixes bug 1364543

Change-Id: I2cb33b39be950528fa9e22d9a11722bedd0927aa