[k6] Measure CM-handle (de)registration in CM-handles/sec

As per characteristics requirements document:
- measure registration in CM-handles/second
- measure deregistration in CM-handles/second
- summary table includes test case number, description,
  units of measurement, actual value and limit.

Issue-ID: CPS-2269
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
Change-Id: I838004da1c230ab722f49c2adacf34e730d7ac79
11 files changed