bzimage: re enable testing, fix test
bzimage: re enable testing, fix test

Something about time formatting changed. It seems to vary enough
that we truncate the 'got' string on the JSON.

Signed-off-by: Ronald G. Minnich <f569d0af9a3481c4007b95c7180d6c41009f2513@gmail.com>

u-root/u-root,u-root/u-root,u-root/u-root