pytest_plugin: use the stock pytest_postgresql postgresql factory
instead of swh-core's postgresql_fact one, since we actually do not use its custom features any more in swh-storage.
Migrated from D7918 (view on Phabricator)
Staging instance, all changes can be removed at any time
instead of swh-core's postgresql_fact one, since we actually do not use its custom features any more in swh-storage.
Migrated from D7918 (view on Phabricator)