Changed an apache test to 'expected failure', since we don't have formal criteria for this particular feature.
Split the two-role-high-qvalue test into its own class for clarity.
Increased the sleep time on TestMultiClusterMultiNode to decrease flakiness.
Changed tests to check requests per minute instead of per second, to decrease flakiness.
Merge pull request #549 from richard-sartor/test-fixes

Test fixes - not tied to any story