[IMPROVED] Use NoFreelistSync for RAFT's bbolt store
[IMPROVED] Use NoFreelistSync for RAFT's bbolt store

This option had been disabled due to a defect in bbolt implementation.
Since it has been fixed, re-enable it.

Was commented out in https://github.com/nats-io/nats-streaming-server/pull/766

Signed-off-by: Ivan Kozlovic <a15f8b81a160b4eebe5c84e9e3b65c87b9b2f18e@synadia.com>

nats-io/nats-streaming-server,nats-io/nats-streaming-server