HPCC-11106 Add support for nagios

	- Add additional cmd line options to configgen
          to create csv from environment.xml files
	- Add Sasha and Dafilesrv definitons

Signed-off-by: Gleb Aronsky <gleb.aronsky@lexisnexis.com>
Merge pull request #5749 from garonsky/HPCC-11106_nagios_configgen_support_2

HPCC-11106 Add support for nagios in configgen

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>