Is your feature request related to a problem? Please describe.
Current implementation of RemoteOnlineStore makes several round trips to the feature server when multiple feature views are requested due to previous OnlineStore interface limitations.

Describe the solution you'd like
After #4319 it should be possible to implement RemoteOnlineStore by overriding the new get_online_features method instead of online_read which would enable it to work better with multiple feature views and feature services.