Fix 'alembic branches' merge conflict as described by the web page.

........

Merged revisions 411191 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@411192 65c4cc65-6c06-0410-ace0-fbb531ad65f3

contrib/ast-db-manage/config/versions/4c573e7135bd_fix_tos_field_types.py

 """Fix tos and cos field types
 
 Revision ID: 4c573e7135bd
-Revises: 21e526ad3040
+Revises: 28887f25a46f
 Create Date: 2014-03-05 12:16:56.618630
 
 """