e808ba1f7d07bf4acc968d9ca1fed6892c7b12e9

The PR adds the cinder block pool metrics so that we can now retrieve insights into the environment on the capacity all active storage pools. This PR also creates tests for the new plugins and reduces duplication across plugins by centralizing the runner method into the init of the tests module. This should now bring total code coverage to 100% Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
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