logging: make client / server comm less chatty

there is simply too much noise around and it clutters the output
beside we spend time writing to terminals.

Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
config: paramter parsing needs some fixing

right now all we care to pass is "qpid_heartbeat 2" but it was failing
miserably.

Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
client: add timestamping and basic perf info around repeat loop

Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>