dirtest.sh: don't rely on apparmor_parser -N's output sort order to be deterministic

I've seen this test fail because "apparmor_parser -N" returned the expected
lines, but in a different order than what's expected (dirtest.out).

To fix this, sort both the expected and actual output.

parser/tst/dirtest.sh

@@ -31,8 +31,9 @@ do_tst() {
 	shift 2
 	#global tmpdir
 
-	${APPARMOR_PARSER} "$@" > "$tmpdir/out" 2>/dev/null
+	${APPARMOR_PARSER} "$@" > "$tmpdir/out.unsorted" 2>/dev/null
 	rc=$?
+	LC_ALL=C sort "$tmpdir/out.unsorted" > "$tmpdir/out"
 	if [ $rc -ne 0 ] && [ "$expected" != "fail" ] ; then
 		echo "failed: expected \"$expected\" but parser returned error"
 		return 1

parser/tst/dirtest/dirtest.out

@@ -1,3 +1,3 @@
-good_target
 a_profile
 b_profile
+good_target