Fixing the DriverRepoPackage to consider the metadata file as a file, rather than just extracting the md5. This is important as the data is required for article generation later on.

Signed-off-by: Rob Dobson <rob@rdobson.co.uk>
Merge pull request #2 from rdobson/fix_metadata_md5

Fixing the DriverRepoPackage to consider the metadata file as a file