Removed test tools from Refstack

Remove depricated code (part 3)

This patch removes code which runs tempest tests  and parse its
results. Now, this functionality moves to new refstack-client.
Refstack-client hosted in separate repository:
https://github.com/stackforge/refstack-client

https://storyboard.openstack.org/#!/story/110
Spec: specs/approved/identify-code-to-deprecate.rst

Change-Id: I93f625d6efdd4e763304b242e1e34e1b5187e744
Merge "Removed test tools from Refstack"