Fix the config_options_test

The config options test requires the entire configuration item to be transparent from
the documentation system. So we let it do that too.

As an aside, please do not use this power for evil. Documentation is your friend, and
you really should document your configurations. Hiding your module's configuration
information from the system attempting to enforce some sanity in the universe is something
only a Bond villain would contemplate.
........

Merged revisions 397628 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@397629 f38db490-d61c-443f-a65b-d21fe96a405b