Test `DeterministicEventBasedMixinTestCase.test_deterministic_job_completes` causes CI build to hang

When running this test in isolation (from the Jenkins workspace dir), celeryd spits out this:

http://pastebin.com/np50kSS4 (results are truncated)

Here is the code of the test:
http://pastie.org/2730251

This test isn't really providing much value. Nothing is actually being tested; we're just running it to see if the calculator runs to completion without blowing up.

Additionally, the test job being run is using a copy of some old 'smoketest' sample files, which were recently determined obsolete and were deleted. The copy of the job data is here: https://github.com/gem/openquake/tree/6441bde53bfda23324bf6249009e9b3363202984/tests/data/demos/deterministic

My suggestion is that we skip or delete this test (since it isn't really providing any value) and replace with a proper QA in the near future. (Note: The QA tests that we have implemented so far are running stably and are providing good value.)