Update Contributed Realtime Schema Files - IPv6 Addresses

This commit updates some fields in the contributed realtime schema files to
handle IPv6 addresses.

(closes issue ASTERISK-21173)
Reported by: Torrey Searle
Patches:
  realtime_sql.patch Torrey Searle (license 5334)
  asterisk-21173-update-ip-fields.diff Michael L. Young (license 5026)
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Merged revisions 382939 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 382940 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@382941 f38db490-d61c-443f-a65b-d21fe96a405b