Add more debug for impl_rabbit

* Add more specific logging records
and messages dumps for key events
in rabbitmq driver.

Co-authors: Serg Melikyan
Co-authors: Alexey Kornienko

Change-Id: Ib62c98770d1216a50b225f6aa522612c96939bbd
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>