bdb: Add test for futility bdb --add
bdb: Add test for futility bdb --add

BUG=chromium:649554
BRANCH=none
TEST=make runtests

Change-Id: Ie774a64e9abd6de8f0f96567f6f6a2e930a8624c
Signed-off-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/388733
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot