Dereference transportAddress and transportDomain tuples.  Places the fir...

This resolves the issues associated with missing server extractions on the SNMPv3 trap receiver

Dereference transportAddress and transportDomain tuples. Places the first element of the tuple into server, notification_from_address, and notification_from_domain.

Example exception which was thrown prior to commit:
11-01-2014 22:55:33.877 -0700 ERROR ExecProcessor - message from "python /Users/user/Apps/splunk_62/etc/apps/snmp_ta/bin/snmp.py" Exception resolving source address/domain of the trap: not all arguments converted during string formatting snmp_stanza:snmp://SNMP_3_Test