Add Manifest and SquashFS image to tarball.

- Create MANIFEST for image verification.
- Package the MANIFEST and SquashFS into a tarball.

Resolves openbmc/openbmc#1354

Change-Id: If432d7081cb1969c0192318054bf446e9c79b72e
Signed-off-by: Saqib Khan <khansa@us.ibm.com>
1 file changed