Adds peer to CEL report on CEL_BRIDGE_START and CEL_BRIDGE_END

(closes issue ASTERISK-17940)
Reporter: Nic Colledge
Patches:
	features_18.patch uploaded by Nic Colledge (license 6245)
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Merged revisions 350501 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 350502 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@350503 65c4cc65-6c06-0410-ace0-fbb531ad65f3