Added a command to dump the current EMK and certificate.

This is useful for debugging enterprise device authentication issues
with the enterprise machine key (EMK).

Also cleaned up the stale 'chaps' command.

BUG=none
TEST=manual

Change-Id: I3bad18f027b428db93c58de9330d9e04c9469dca
Reviewed-on: https://chromium-review.googlesource.com/185144
Reviewed-by: Will Drewry <wad@chromium.org>
Commit-Queue: Darren Krahn <dkrahn@chromium.org>
Tested-by: Darren Krahn <dkrahn@chromium.org>
1 file changed