Todays idea of API reg/unreg is to carry the target service via
lambda captures down to the route handlers and unregister those
handers before the target is about to stop.
This patch makes it so for the streaming API.
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
This adds the implementation for hte stream_manager API.
It goes over all stream, on all shards and combine the result to a
vector of streams.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
