Updated openstack/openstack
Project: openstack/oslo.messaging  3828357c7171e8ed483f8355da33e922d427a63b

Rabbit: Fixes debug message format

Add the missing 's' for the message format and
just print the number queues instead of print a list
full of '<object object at 0xXXXXXXXXXX>'.

Change-Id: Idaab4057bc6a41523a1944ae0c8e15e5e885b390