Fix potential use of old connections after config change
Fix potential use of old connections after config change

Despite detecting and tagging them for close on config change,
the closing happened only in long-term maintenance.  So there
was time where they could still be reused by clients.

Fix this by strict check in find_server()

wurenny/pgbouncer-x2,digoal/pgbouncer-x2,wurenny/pgbouncer-x2,kvap/pgbouncer,digoal/pgbouncer-x2,kvap/pgbouncer,kvap/pgbouncer,dbaxa/pgbouncer,digoal/pgbouncer-x2,dbaxa/pgbouncer,jaiminpan/pgbouncer,kvap/pgbouncer,wurenny/pgbouncer-x2,wurenny/pgbouncer-x2,jaiminpan/pgbouncer,dbaxa/pgbouncer,digoal/pgbouncer-x2,dbaxa/pgbouncer,jaiminpan/pgbouncer,jaiminpan/pgbouncer