ACE Management Agent 

@see ACE-347

Notes:

* Switched to factory SPI approach for pluggability/extensions.
* Removed export package atributes / cleaned up bundle contents.
* Assembled most target specific business logic code in project.
* Supports configuration through single (multi-agent) configuration.
 
 TODOs:
 
 * Cleanup assembled code and parent projects
 * More config options
 * More (i)testing
 * Create run-agent project
 * Replace ace executor with a executorservice?