[Xymon] Xymon ping bug

I added this line to hobbit config by accident (a 'vim' accident ;-):

10.12.30.2929292929292929292929292929292929292929292929292929292929 metroli-be7 #

And all network test become purple. It seems than xymonping stop working with bad formatted IPs:

A very quick fix is to simply discard such hosts when loading the hosts.cfg file. Patch attached, should work against any 4.3.x version.

Regards, Henrik