Convert server side connection pool URL to JDBC
Convert server side connection pool URL to JDBC

If server-side connection pooling is configured for the primary database as per [the guide](https://devcenter.heroku.com/articles/postgres-connection-pooling#enabling-connection-pooling) it currently will not get a JDBC compatible URL generated.
heroku/heroku-buildpack-jvm-common,Scalingo/jvm-common-buildpack,Scalingo/jvm-common-buildpack,heroku/heroku-buildpack-jvm-common