Switch to use ComponentManager for traits/components Removed the old StateManager, CommandManager and related classes and switched over to using ComponentManager for all device trait and component definitions as well as device state. Change-Id: I99b99a935ba217703d31aa523a3124cca0fa3e90 Reviewed-on: https://weave-review.googlesource.com/1788 Reviewed-by: Alex Vakulenko <avakulenko@google.com>