Use graduated libraries where available and update the incubated modules
that remain.
Update imports for libraries that were being used already to avoid the
'oslo' namespace package.
Update config file for creating example configuration files and provide
a new sample file based on the options defined in the libraries.
Note: because of the number of libraries involved there is no real way
to break this change up into smaller pieces. Fortunately, most of the
changes are just to import statements.
Change-Id: Ia0de957b681cb924a57af98d99a9389ee234ed5b
583ce2c043