[PATCH] Revert "ctdb-scripts: Do not "correct" number of nfsd threads when it is 0"

[Martin Schwenke]

I thought this was being triggered during automated testing.
However, it appears that a poor choice of fixed ports for NFS RPC
services was the real problem.  Revert, since the original behaviour
may be useful.

This reverts commit f1a1c300e192d43f5c9faf9450ffbf16341a2661.

Please review and maybe push...

peace & happiness,
martin