Fix issues with grafana dashboards after multiple micrometer

Fix issues with grafana dashboards after multiple micrometer
and spring actuator uplifts.

- changed the metrics that have been renamed automatically
- changed the irate functions range to the same used on each
dashboard instead of fixed
- apex_healthcheck function wasn't being called when running
csit script because it was declared after usage

Issue-ID: POLICY-5155
Change-Id: I993f022937f6e2041a6c50dc5037c559da087849
Signed-off-by: adheli.tavares <adheli.tavares@est.tech>