Change switch template to add two HP models by check_snmp.

Hello,

I want to monitor models of switch not supported by check_nwc_health. To keep things simple, I tried to check them by SNMP. I also add graphite template for the check_snmp checks.
All is working great for me, but I can't test the nwc checks.
Also, I didn't add or update the .pack files because I don't know where are they used.