Add healthchecks for docker-compose for k6 and CSIT

Add healthchecks for docker-compose for k6 and CSIT

To improve reliability and consistency of healthchecks in
k6 and CSIT tests, they are implemented in docker-compose.
This commit adds fail-fast logic, where k6 and CSITs will
abort immediately if the containers won't start.

Implementation:
- Add healthchecks for docker containers used in tests.
- Change k6 & CSIT tests to use docker healthchecks.
- Tests will abort if containers are not healthy.
- Start-up timeout for CPS containers is 90 seconds
- Start-up timeout for other containers is 60 seconds

Other Improvements:
- Add --quiet-pull option to suppress junk output in Jenkins logs.
- Add kpi.env file containing environment variables for KPI pipeline,
  just like endurance.env. This allows same code to run either suite.
- Changed from port range to port number for Postgres exporter, since
  only a single instance runs, to be consistent with other containers

Issue-ID: CPS-2630
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
Change-Id: I50929ca4061bb844fca87a0d6c3103aaa2c45e0b