Automated timeline testing for cloud

This is a test to generate events for RHOS provider and then verify that the events show up on the timelines of instance,availability zone and cloud provider.
This would actually build a list that would be thrown away right after finishing, rather than just iterate over the things. It is possible to do this lazily - if you put the expression in parentheses rather than `[]` (it will just create a generator). Then if you create some function, that will just iterate the created generator, it would be something like this:
```python
request.addfinalizer(fiterate(x for x in y))  # fiterate would return `lambda: iterate(expr)` and iterate would just iterate
```
But this does not seem too pythonic for me since the gain would be low over the complex syntax. I'd personally leave it as it is but remove the `instances_dict` parameter since inside the function, you can see the `provisioned_instances` variable. Then you can get rid of lambda and pass just the `delete_instances` function there.