health_check_interval is set to True, not number of seconds

[androa]

The documentation of redis-py says health_check_interval is an int for the number of seconds between health checks or ping/pong.

https://github.com/chdsbd/kodiak/blob/729e64dbc1211117a1d83aaccc0bcbd0967e550a/bot/kodiak/redis_client.py#L22

I assume setting it to true would be the same as setting it to 1? Maybe 10, 30, or a configurable value would be better?