Feature request: Auto discovery for for multiple dbIndex in the same redis cluster

[devopsmash]

It would be great to have the ability to auto-discover all dbIndexes in use within the same Redis cluster, rather than having to manually specify them multiple times in the configuration (like here).

in redis cli it can be detected with the command redis-cli INFO or INFO keyspace, in order to get the relevant db indexes that are in use (more info here).