Not all test operations are exposed to the web frontend

[EnigmaCurry]

stress_compare has the following operations:

• stress
• nodetool
• cqlsh
• bash

cqlsh and bash aren't exposed at all, and nodetool is exposed as 'flush' and 'compact' - these should be generalized and re-exposed.

[EnigmaCurry]

initial work here https://github.com/datastax/cstar_perf/tree/all-operations