reports
scripts/tools/rrs_upstream_history.py: Add script to migrate the
upstream info from distrodata reports.
scripts/rrs_update/recipe_upstream.py: Make vercmp_string function
public in order to import from rrs_upstream_history.
rrs/views.py: Now if a recipe have history but not upstream info
set to Unknown state.
Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
