Add data integrity example to netio sample job file

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/examples/netio b/examples/netio
index bb103f1..beaf8c1 100644
--- a/examples/netio
+++ b/examples/netio
@@ -4,11 +4,11 @@
 filename=localhost/8888
 bs=4k
 size=10g
+#set the below option to enable end-to-end data integrity tests
+#verify=md5
 
 [receiver]
 rw=read
-cpumask=1
 
 [sender]
 rw=write
-cpumask=1