Adding support for logging related variables
Adding support for logging related variables

BetterWorks/heroku-buildpack-pgbouncer,realtymaps/heroku-buildpack-pgbouncer,rmoorman/heroku-buildpack-pgbouncer,heroku/heroku-buildpack-pgbouncer,Yobota/heroku-buildpack-pgbouncer,agriffis/heroku-buildpack-pgbouncer,Shyp/heroku-buildpack-pgbouncer