Changes to list peers and users in alpha. order, as per a reasonable request...

Changes to list peers and users in alpha. order, as per a reasonable request in 12494. Due to changes in trunk to use the astobj2 i/f in the sip channel driver, the order of the entries in the config file was lost, thus the output was in a random order, but no longer.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@123448 65c4cc65-6c06-0410-ace0-fbb531ad65f3