We need to print out the version info
for cryptogen.  This adds a version
command:  cryptogen version

Note that the metadata package is
self-contained in case we decide to
move cryptogen to its own repo in
the future.

Change-Id: Icce83bb125cd9b8c7b8b6ae534fe330cf151e115
Signed-off-by: Gari Singh <gari.r.singh@gmail.com>