improvement: use simpler rocksdb config

Timo Köstersrequested to merge
rocksdb into next

This MR goes back to a simpler rocksdb configuration as described in https://github.com/facebook/rocksdb/wiki/Setup-Options-and-Basic-Tuning

  • I agree to release my code and all other changes of this MR under the Apache-2.0 license

Merge request reports