We recently move ack/requeue of messages in main/polling thread
of rabbitmq drivers. And break the blocking executor.
This one is not tested by any tests and now deprecated.
This change workaround the issue until we completely remove the
blocking executor.
Change-Id: Id479100f6ff364cf67a199e9b70f9f0c7bf7e1a9
Closes-bug: #1694728