Add capture node name for freeswitch native capture agent

[hnimminh]

Hi @lmangani , I'm trying to add support nodename to header some how it doesn't work, I try to find out but no luck, can you help by take a look into this: https://github.com/freeswitch/sofia-sip/compare/master...hnimminh:sofia-sip:homer-capture-support-nodename

very appreciate !