* Add network value to support_by field.
* New support_by value, certified
* Deprecate curated in favor of certified
* Add conversion from 1.0 to 1.1 to metadata-tool
* Add supported by Red Hat field to ansible-doc output
We do want to allow certain from __future__ imports in modules that make
it easier to code compatible python2 and python3. Note that
unicode_literals is specifically left out and should never be allowed.
Now that python-3.4+ allows u"" there's no good reason to use
unicode_literals.
Also switch tables in the validate_modules documentation to simple table format
