Move USER and PASS to config var
Move USER and PASS to config var

timshadel/heroku-buildpack-stunnel,realtymaps/heroku-buildpack-pgbouncer,gregburek/heroku-buildpack-postgresql,musicglue/heroku-buildpack-postgresql,rmoorman/heroku-buildpack-pgbouncer,Shyp/heroku-buildpack-pgbouncer,davegwilt/heroku-buildpack-stunnel,Yobota/heroku-buildpack-pgbouncer,BetterWorks/heroku-buildpack-pgbouncer,agriffis/heroku-buildpack-pgbouncer,heroku/heroku-buildpack-pgbouncer