Ohm: not reusing the same connection

[HoneyryderChuck]

It's strange, but it seems that the strategy is always opening a connection to the default redis location:

https://github.com/DatabaseCleaner/database_cleaner/blob/19773bbd1caa969e0e9be5eb0a8842b66f566f58/lib/database_cleaner/redis/base.rb#L25

It's a bit weird, as I don't see how to set the db parameter (which is not a db, but a url), and then, in the ohm adapter:

https://github.com/DatabaseCleaner/database_cleaner/blob/19773bbd1caa969e0e9be5eb0a8842b66f566f58/lib/database_cleaner/ohm/truncation.rb#L9-L11

which is not used anywhere...