Update pgbouncer to use one style of logging

Currently, we're logging to both /var/log/gitlab/pgbouncer/pgbouncer.log and /var/log/gitlab/pgbouncer/current. We should consolidate to one of those.

created branch 2751-update-pgbouncer-to-use-one-style-of-loggin

mentioned in merge request !1918 (merged)

marked this issue as related to #2571

changed title from Update pgbouncer to use one style of loggin to Update pgbouncer to use one style of logging

closed via merge request !1918 (merged)

mentioned in commit 9d44ae02

mentioned in commit cea20021