Rethink the wait event names for postgres_fdw, dblink and etc

When Who What
2023-10-05 01:24:52 Michael Paquier (michael-kun) Closed in commitfest 2023-11 with status: Committed
2023-10-05 01:24:52 Michael Paquier (michael-kun) Changed committer to michael-kun
2023-10-02 09:45:23 Peter Eisentraut (petere) Closed in commitfest 2023-09 with status: Moved to next CF
2023-08-18 03:28:35 Masahiro Ikeda (masahiro.ikeda) Changed authors to Masahiro Ikeda (masahiro.ikeda)
2023-08-18 03:28:21 Masahiro Ikeda (masahiro.ikeda) Attached mail thread 197bce267fa691a0ac62c86c4ab904c4@oss.nttdata.com
2023-08-18 03:28:21 Masahiro Ikeda (masahiro.ikeda) Created patch record