working on a fix, but ticketing for tracking.
- all redis tests hit the same db (0)
- keys are simple ("0"-"10"), so they can conflict with existing user keys
- tearDown doesn't actually delete created keys
use a default key_mangler for redis (prefix with "dogpile.test._TestRedisConn:")
use a custom key_mangler for each test ("dogpile.test.%(test)s")
* set a
redis_expiration_time argument on the config_args. update the backend test to respect