Fix 'start console session' command error
Fix 'start console session' command error

Command "confetty start /nodes/<node>/console/session" can
not work correctly. This patch aims to add condition judgement
for this command in confetty.

jjohnson42/confluent,jufm/confluent,jjohnson42/confluent,xcat2/confluent,jufm/confluent,jjohnson42/confluent,whowutwut/confluent,xcat2/confluent,jufm/confluent,xcat2/confluent,chenglch/confluent,chenglch/confluent,jjohnson42/confluent,chenglch/confluent,jufm/confluent,jjohnson42/confluent,jufm/confluent,xcat2/confluent,xcat2/confluent,whowutwut/confluent,whowutwut/confluent,chenglch/confluent,chenglch/confluent,whowutwut/confluent