This is largely geared for testing for quickly creating a set of loem keys.
BUG=chromium:381862
TEST=`./add_loem_keys.sh 0` converted an existing keyset to a loem keyset
TEST=`./add_loem_keys.sh 3` added three more keysets
TEST=ran sign_official_build.sh with new keysets against a recovery.bin
BRANCH=none
Change-Id: I598b7a453b747a231df850657df50bede01768c2
Reviewed-on: https://chromium-review.googlesource.com/203940
Reviewed-by: Gaurav Shah <gauravsh@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
