I would like the ability to have individual filter configurations be named and fetchable from a discrete management server. This would allow federation of filter configuration from multiple sources, for example fault testing. Thought needs to be put into how this plays with FCDS for listener filters, draining, whether filters can swap config atomically via a new optional interface, etc.

If we do this right we should not need the TapDS IMO.

cc @envoyproxy/api-shepherds @htuch @yuval-k