Revert "One less arg"

This reverts commit 85d19fd43b160bcdfd619142fa2f3bd0027a52e4.
Revert "Stop over-specifying what should be in the users's .sshcommand file, and execute the .sshcommand file when sshing in instead of droping the contents of the file into the authorized_keys"

This reverts commit 8afe1a5bdc779037e132caaa72bd20e409295a1f.