Add tool for generating bios image tarball

Adding a gen-bios-tar tool for generating a bios image tarball from given bios
image file as input along with version, machine name parameter. It creates a
MANIFEST for image verification and recreation. It also packages the image and
MANIFEST together in a tarball.

Currently machine name is optional but it will become mandatory in future.

This tarball is required for bios upgrade through image updater

Tested: Verified this with actual image.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Change-Id: I6e9ec57d2b38c9e144bd725026c64106d16c6a6f
1 file changed