Fix TLS port binding behavior as well as reload behavior:

* Removes references to tlsbindport from http.conf.sample and manager.conf.sample
* Properly bind to port specified in tlsbindaddr, using the default port if specified.
* On a reload, properly close socket if the service has been disabled.

A note has been added to UPGRADE.txt to indicate how ports must be set for TLS.

(closes issue ASTERISK-16959)
reported by Olaf Holthausen

(closes issue ASTERISK-19201)
reported by Chris Mylonas

(closes issue ASTERISK-19204)
reported by Chris Mylonas

Review: https://reviewboard.asterisk.org/r/1709
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Merged revisions 353770 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 353820 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@353821 65c4cc65-6c06-0410-ace0-fbb531ad65f3