Adjust K6 thresholds

- Adjust timings based on previous runs.
- Reduce from 5 to 4 parallel clients for CM handle searches
  to avoid OutOfMemoryErrors.

Issue-ID: CPS-2208
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
Change-Id: I339cc3df84b2295bb11371ab73b4948f43615c15
11 files changed