Closes #83
Refactor LoadTest
- Add AbstractLoadTest (including small test to sanity-check that test actually works!)
- Change to use yams-based blueprints
- Adds SimulatedVanillaSoftwareProcessImpl
- Adds SimulatedExternalMonitor (for setting sensors on entities)
These changes don't try to fix or investigate any performance/scalability issues etc - they just try to make the tests work better, and be more representative of real-world blueprints (e.g. be written in YAML, and use `VanillaSoftwareProcess`).
Requires that https://github.com/apache/brooklyn-server/pull/506 be merged first.
