master: add grub repository

Change-Id: I827ffb9d5049465b4f25a02404dbf7be77477e3b
Merge pull request #49 from marineam/grub

master: add grub repository
add(build-487): Add manifest for v487.0.0

Change-Id: Ie566999456a9a653f25e6090538c1c06c84cbc4a