gossip: Print convict debug info only when the node is alive
gossip: Print convict debug info only when the node is alive

duarten/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,raphaelsc/scylla,raphaelsc/scylla,duarten/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla,raphaelsc/scylla,avikivity/scylla,avikivity/scylla