Fix security events for AMI invalid password

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


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/11@400421 f38db490-d61c-443f-a65b-d21fe96a405b