wireprotoserver: add version to SSH protocol names (API)
We recently introduced version 2 of the SSH protocol. Like we
did for the peer, we will need to differentiate version 1 and 2
of the server. So, we add version components to the advertised
name of the protocol handler.
Nothing in core looks for the old value. But an extension may.
SSH protocol handler now advertises its name internally as "ssh-v1" instead of "ssh."
Differential Revision: https://phab.mercurial-scm.org/D2092