gluon-core: don't call legacy scripts on normal upgrades

package/gluon-core/files/etc/uci-defaults/zzz-gluon-upgrade

@@ -49,7 +49,7 @@ do_component() {
 			local v
 
 			for v in *; do
-				[ "$v" != initial -a "$v" != invariant ] || continue
+				[ "$v" != initial -a "$v" != invariant -a "$v" != legacy ] || continue
 
 				# The return value of opkg compare-versions is negated
 				if ! opkg compare-versions "$v" '>>' "$oldversion"; then