[Beowulf] automount on high ports

[Henning Fehrmann]

> Which corresponds exactly to the maximum achievable mounts of 358 right

359 ;)

If the number of mounts is smaller the ports are randomly used in this range.
It would be convenient to enter the insecure area. 
Using the option insecure for the NFS exports is apparently not
sufficient. Also every nfs server is connected from a distinct port on
the client side.
Two mounts to a single server might end up on the same port.

Cheers
Henning