Currently the code fetches the compressed JSON, writes it to a temporary file,
uncompresses that with gzip and passes the fake file object to update_db().
Instead, uncompress the gzip'd data in memory and pass the JSON directly to
update_db().
(From OE-Core rev: 9422745979256c442f533770203f62ec071c18fb)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>