NFS test: re-add the fix for the terminal

When debugging, this is still needed as we won't be redirecting out
output to /dev/null or a file. However, we need to guard against not
having a terminal.

test/TEST-20-NFS/test.sh

@@ -16,6 +16,9 @@ run_server() {
 	-initrd initramfs.server -pidfile server.pid -daemonize || return 1
     sudo chmod 644 server.pid || return 1
 
+    # Cleanup the terminal if we have one
+    tty -s && stty sane
+
     echo Sleeping 10 seconds to give the server a head start
     sleep 10
 }