Move 'new connection' message to connect_server()
Move 'new connection' message to connect_server()

The actual address is not known before, thus log message
was 0.0.0.0.  Now it logs actual address.

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