remote host monitoring service syntax patch (proposal)

[Martin]

Hi,

here is patch for implementing syntax of remote host checks as discussed. New 
syntax (only changed portion):

  CHECK HOST myname WITH ADDRESS [192.168.1.1|www.myhost.com]
    IF FAILED [HOST virtual.myhost.com] PORT 80 ...
 
=> you can use host specification in the port statement (usefull for definition 
of virtual hosts in one statement).

Advantages of this patch:
1.) simplifies code
2.) provides consistent syntax for port statement for both process and remote 
host checks (support for host option)
3.) supports virtual hosts => you don't need to specify one check for each 
virtual host
4.) allows to split tests of remote services running on same physical host to 
more checks in monitrc => you can monitor separately for example database and 
webservices and define dependency for appropriate dependant local processes 
(some may depend on database service only, some on webservices only, etc.)
5.) the basic syntax of remote host check is consistent to other checks by 
supporting service tag (shortcut). This can also be usefull in the case of long 
hostnames, IPv4 and IPv6 addresses

If you agree, i can checkin this patch plus update related documentation.


Martin