The export2json function export the variables contained in
the data store to JSON format, the main usage for now will be
to provide test data to QA framework.
(From OE-Core rev: 57c7bf68ed66a56601e1431bb2db750c5742b5ce)
Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>