Make inherited test methods follow JUnit conventions

[k-jamroz]

Fixes test method inheritance to follow JUnit conventions: preparation methods should be executed from superclass first and later from subclass, after test methods in the opposite order. Previously search finished on first class containing method with given annotation (see findAllDeclaredMethods).

This changes previous behavior, but because it was hardly useful it is assumed that nobody relied on it.

[k-jamroz]

LGTM, thanks @k-jamroz - my only question: is there any expected impact on existing tests using simulator?

I checked tests inheriting from HazelcastTest:

• UCDTest subclasses override setUp method, so it should still be invoked once
• AbstractMapTest and AbstractClient1Benchmark subclasses could be simplified
• the rest either does not use more levels of inheritance or defines annotated test methods only on single level