In r337595, additional security events were added for chan_sip
authentication failures. The new IEs added to the existing invalid
password event were defined as required IEs, but existing users of the
event did not set the new IEs and could not since they didn't apply to
existing uses. They are now marked as optional IEs.

(closes issue ASTERISK-22578)
Reported by: Matt Jordan
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Merged revisions 400421 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 400440 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@400441 65c4cc65-6c06-0410-ace0-fbb531ad65f3