Use information from ssh_scan

[dolmen]

claudijd/ssh_scan is an interesting tool that can analyze the features of an SSH server and report the result in format processable by a machine (see example).

Use cases:

• monitor the ssh_scan output of a run against GitHub servers to monitor changes in GitHub SSH infrastructure that may require require changes in github-keygen (either to maintain functionality or to improve security of the configuration if some algorithms are added on the server).
• use the ssh_scan output as input to generate code for support for other git/shell platforms (Gitorious support #2, SourceForge support #3, Heroku support #8...)