If a client publishes audio/video and no longer has the video permission,
the whole publisher will be closed. Previously this was only checking
the generic "media" permission.
This can be used for example to route all users on continent A to proxies
on continent B. Useful if no proxy exists on continent A and the global
selection chooses a non-ideal proxy.
- Individually for each backend.
- For the proxy client (i.e. signaling server using cluster of proxies).
- For the proxy server / MCU.
The smallest bandwidth configured will be used, e.g. if a backend has a
larger limit than the MCU assigned for the stream, the limit of the MCU
server will be used.