Test infrastructure for multi-thread load testing

[Sidnei da Silva]

I've did a small refactoring of the LandscapeTest class to move out some of it's functionality to separate unittest.TestCase-based classes, so I can reuse them with FunkLoad.

Another change was the addition of some class-level variables to the FakeRemoteBrokerHelper, so that I can customize them on a subclass.

Additionally, I've added a '--ignore-sigusr1' option to LandscapeService so that it doesn't register the SIGUSR1 handler, since it's not possible to register a signal in multiple threads.

The FunkLoad test I wrote using this is working perfectly, so it would be nice to get those changes in.

[Free Ekanayaka (free.ekanayaka)]

Nice and simple! +1

[1]

While you are at it, would you mind adding a docstring to the new classes?

[Thomas Herve (therve)]

[1] It looks like MockerTestCase has already make_path and make_dir methods (makeFile and makeDir). Maybe we should use that? I understand it may be a big change, but it seems like a nice cleanup.

+1!

[Sidnei da Silva (sidnei)]

Addressed Thomas' [1], please do a re-review.

[Sidnei da Silva (sidnei)]

 Merge trials-and-tribulations [r=free,therve] [f=404223]

 Refactor some tests to subclass from unittest.TestCase such that it
 can be re-used in benchmarks. Also get rid of noop helper class and
 replace duplicate make_path/make_dir by makeFile/makeDir from
 MockTestCase.

[Sidnei da Silva (sidnei)]

Just for the record, Thomas gave me a +1 in person.