Restore Extra Line Break Between Peers When Running AMI Action SIPPeers

The commit (r387133) for fixing ASTERISK-21466 accidentally removed an extra
line break between the peers returned by the AMI action SIPPeers.  This
results in some parsers breaking because they expect this extra line break.

This patch restores that extra line break.

(closes issue ASTERISK-22239)
Reported by: Jacek Konieczny
Tested by: Jacek Konieczny, Michael L. Young
Patches:
    asterisk-ami_sippeers_separator.patch by Jacek Konieczny (license 6298)


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/1.8@396236 f38db490-d61c-443f-a65b-d21fe96a405b