Since NATS Streaming implementation is such as the leader is the one handling all communication with clients, adding a note that the cluster cannot be horizontally scaled, and that its size should be limited to 3 to 5 nodes.
- Added some configuration params in TLS section
- Updated serverz monitoring endpoint with new fields
- Not related to this release, but bring up-to-date list of command
line parameters (result from "nats-streaming-server -h")
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>