Move OBS simulation to separate class, should be eventually moved to separate
file as well. And converted test_dispatch_open_requests to use new and shiny
testing infrastructure.
To make testing more reliable and nice and generally better, we need to address
few issues. First of all, currently it is hard to figure out what was test
trying to access if accessing it fails. Second issue was that we mixed both
tests and OBS simulation logic. In perfect world, we should write some state
machine simulating OBS in some limited way and checking that scripts behaviour
corresponds to it.
This commit attempts to solve it at one example - review handling test.
So far we have a mess everywhere, but we are mainly using/working on
osc-staging.py file, so letting test suite use it by symlinking it for now.
General idea is once we cleanup everything, we get rid of all the mess around
and move this file to the correct location. Also moving some directories around
to clean up stuff even more.
