fate: Add sunrast regression test

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

tests/lavf-regression.sh

@@ -223,6 +223,10 @@ if [ -n "$do_xwd" ] ; then
 do_image_formats xwd
 fi
 
+if [ -n "$do_sun" ] ; then
+do_image_formats sun
+fi
+
 # audio only
 
 if [ -n "$do_wav" ] ; then

tests/ref/lavf/sun

+07518bcb0841bc677ce6aea8464ea240 *./tests/data/images/sun/02.sun
+./tests/data/images/sun/%02d.sun CRC=0xe6c71946
+304123 ./tests/data/images/sun/02.sun