Fix cloud connect attempt loop
Fix cloud connect attempt loop

This patch closes the unix socket between knotd and peer when the
fog/cloud server is down, avoiding looping due pending accept.

CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source