This change provides the necessary modifications to enable
building of pdf documentation. The resources.py extension
required modification to:
- prevent attributes from being rendered as stray \items
outside of a list environment
- prevent update policies from being rendered as stray
\items outside of a list environment
- remove the 'Note:' admonition around the 'Not implemented'
message when it applies to a sub-property, such as a list.
The admonition was not rendered as a list item, causing the
build to fail due to an empty list.
Change-Id: Id4e533430600b5ff03fd63cdc09b9a00741b8e4e