New Features
* Added a standard way to both declare and fetch configuration
options so that whenever the administrator generates the Watcher
configuration sample file, it contains the configuration options of
the plugins that are currently available.
* Added a generic scoring engine module, which will standarize
interactions with scoring engines through the common API. It is
possible to use the scoring engine by different Strategies, which
improve the code and data model re-use.
* Added an in-memory cache of the cluster model built up and kept
fresh via notifications from services of interest in addition to
periodic syncing logic.
* Added a way to add a new action without having to amend the source
code of the default planner.
* Added a way to create periodic audi...