given a host and service, print the executed command line

This helps track down problems with nagios plugins so you can execute
the exact command that nagios is running and view all output.

Requires the MK_Livestatus NDO plugin and Nagios::MKLivestatus

You will need to modify the script to reference your resources file
and the location of the MK_Livestatus socket

You may need to modify parse_macros() to parse out the macros in use
by your environment.