Add manager events for chanspy starting or stopping

(closes issue #14469)
Reported by: caio1982
Patches:
      chanspy_events2.diff uploaded by caio1982 (license 22)



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@175655 65c4cc65-6c06-0410-ace0-fbb531ad65f3