Homestyx hydra

R1:26582eb82d2f

Provide a more helpful message if a user connects via raw SSH

Summary: We currently print a fairly vague, technical message which is ambiguous about indicating success or an error if you aren't familiar with SSH.

Test Plan:
$ ssh -T dweller@localhost
phabricator-ssh-exec: Welcome to Phabricator.

You are logged in as epriestley.

You haven't specified a command to run. This means you're requesting an interactive shell, but Phabricator does not provide an interactive shell over SSH.

Usually…
Repository: R1 hydra
Commit Date: Dec 30 2013