Move region check for chaos tests into chaos tests

[pihme]

Chaos test only work on new chaos region.

Currently, there is a test as part of the testbench processes that checks the region and skips chaos tests, if the region is wrong:

As part of the refactoring, this check should be done inside the chaos test instead:

[Zelldon]

Current idea: Add a serviceTask which verifies the permissions in the cluster. If no permission return false and the experiemts are skipped. This allows to not depend anymore on the ultrachaos cluster, but more on the permission we have.

[Zelldon]

I don't want to have this check in the chaos models.