Use futility to get the key size, rather than openssl.

Openssl output format changed, use futility for key_size.

BUG=chromium:935628
TEST=None
BRANCH=none

Change-Id: I1329fa8cd1a79943dbcd8be19d56680ae22376f1
Reviewed-on: https://chromium-review.googlesource.com/c/1489452
Tested-by: LaMont Jones <lamontjones@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed