IAXpeers output now matches SIPpeers format for manager (AMI).

(closes issue #17100)
Reported by: secesh
Tested by: pabelanger

Review: https://reviewboard.asterisk.org/r/594/

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@258344 65c4cc65-6c06-0410-ace0-fbb531ad65f3