Added -a/--all to test.py/bench.py for bypass test/bench filters

These really shouldn't be used all that often. Test filters are usually
used to protect against invalid test configurations, so if you bypass
test filters, expect things to fail!

But some filters just prevent test cases from taking too long. In these
cases being able to manually bypass the filter is useful for debugging/
benchmarking/etc...

scripts/bench.py

@@ -606,6 +606,8 @@ def find_runner(runner, id=None, **args):
     # other context
     if args.get('define_depth'):
         cmd.append('--define-depth=%s' % args['define_depth'])
+    if args.get('all'):
+        cmd.append('-a')
     if args.get('disk'):
         cmd.append('-d%s' % args['disk'])
     if args.get('trace'):
@@ -1481,6 +1483,10 @@ if __name__ == "__main__":
     bench_parser.add_argument(
         '--define-depth',
         help="How deep to evaluate recursive defines before erroring.")
+    bench_parser.add_argument(
+        '-a', '--all',
+        action='store_true',
+        help="Ignore test filters.")
     bench_parser.add_argument(
         '-d', '--disk',
         help="Direct block device operations to this file.")