Add option group/category to allrandrepeat

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/options.c b/options.c
index dc55c98..87a4432 100644
--- a/options.c
+++ b/options.c
@@ -1834,6 +1834,8 @@
 		.off1	= td_var_offset(allrand_repeatable),
 		.help	= "Use repeatable random numbers for everything",
 		.def	= "0",
+		.category = FIO_OPT_C_IO,
+		.group	= FIO_OPT_G_RANDOM,
 	},
 	{
 		.name	= "nrfiles",