pgbench - improve tap test infrastructure

When Who What
2017-09-08 13:40:14 Tom Lane (tgl) Closed in commitfest 2017-09 with status: Committed
2017-09-05 09:47:43 Daniel Gustafsson (d_gustafsson) Changed reviewers to Tom Lane (tgl), Nikolay Shaplov (nataraj)
2017-09-05 07:30:35 Fabien Coelho (calvin) New status: Needs review
2017-09-04 21:27:26 Tom Lane (tgl) New status: Waiting on Author
2017-09-04 20:26:19 Tom Lane (tgl) Added tgl as committer
2017-08-31 12:27:36 Nikolay Shaplov (nataraj) New status: Ready for Committer
2017-04-28 20:46:33 Fabien Coelho (calvin) New status: Needs review
2017-04-23 17:22:21 Nikolay Shaplov (nataraj) New status: Waiting on Author
2017-04-23 17:22:00 Nikolay Shaplov (nataraj) Added nataraj as reviewer
2017-04-17 05:54:02 Fabien Coelho (calvin) Changed authors to Fabien Coelho (calvin)
2017-04-17 05:53:51 Fabien Coelho (calvin) Attached mail thread alpine.DEB.2.20.1704171422500.4025@lancre
2017-04-17 05:53:51 Fabien Coelho (calvin) Created patch record