Fix distributed version

* Add redelivered messages count
* Add -S for skip consuming (publish only mode)
* Add -o option for single publisher and consumer worker mode
* Add -d option for delay between publishing and consuming
* Fix connection and threading management
* Fix logging levels and formatting
* Fix FTT estimation (compensate code delays/-d sleep introduced)

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