Fixed empty responseNumber #458
Fixed empty responseNumber #458

Executing commands inside containers was not return any responseNumber
in case when there is no output. Fixed now.

subutai-io/base,subutai-io/Subutai,subutai-io/base,subutai-io/Subutai,subutai-io/base,subutai-io/Subutai,subutai-io/Subutai,subutai-io/base,subutai-io/Subutai,subutai-io/Subutai