Provide way to capture SPECjbb2015 output in run

[benjspriggs]

We should have a way for users to capture JVM output for each component. A minimum working PR would allow us to capture:

• [ ] Log output from composite runs
• [ ] Log output from controller in multijvm runs
• [ ] Log output from each JVM in any other runs (backend, transaction injectors)

[benjspriggs]

Deferred since 5/16/18 is the feature freeze date.