I have the same problem, and the custom renaming strategy didn't help. I need to set hbm2ddl to update because I'm using envers, but hibernate tries to recreated all the FK even if they already exist. I also tried to drop them all, but it also tries to recreate the REVINFO table.
Any suggestion? Is this a bug or am I missing something? I've already restored dbs with hibernate 4 and envers, this is only happening with hibernate 5.