Description of assignment configuration options

Configuration option = Default value	Description
[assignment]
cache_time = None	(IntOpt) TTL (in seconds) to cache assignment data. This has no effect unless global caching is enabled.
caching = True	(BoolOpt) Toggle for assignment caching. This has no effect unless global caching is enabled.
driver = None	(StrOpt) Assignment backend driver.
list_limit = None	(IntOpt) Maximum number of entities that will be returned in an assignment collection.