insecure locks test

tests/check-nfs-insecure.sh

 #!/bin/bash
 
-if ! sed -e '/^#/d' -e '/^[ \t][ \t]*#/d' -e 's/#.*$//' -e '/^$/d' /etc/exports | grep insecure_locks;then
+if grep 'insecure_locks' /etc/exports; then
         exit 1
 fi