Add note to install. instructions about https://github.com/redhat-developer/che-functional-tests/issues/409 From the GH issue:

When the thread pool is too big, memory can be depleted which results in OOM.
When the thread pool is too low, messages are being dropped which can cause intermittent issues.

tdancs, dnochevn, could you please provide the suggested values and how/where to edit them for CRW installation?