Change the server to use Zino1ServerProtocol instead of ZinoTestProtocol

[johannaengland]

Well, in reality, the ZinoTestProtocol should not be used by default at all, it's just there during initial development of the API. Its instantiation should be permanently replaced by Zino1ServerProtocol.

This is the line that needs to be changed before Zino 2.0:

https://github.com/Uninett/zino/blob/4343bacf96518f769ea4e1a804a23bcfa5b20935/src/zino/api/server.py#L33-L32

Originally posted by @lunkwill42 in #278 (comment)