Grafana dashboard names should not contain `_` or any non RFC 1123 characters

Grafana dashboard names should follow a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9][a-z0-9])?(
.[a-z0-9]([-a-z0-9][a-z0-9])?)*')

If not, this is failing to import dashboards in Grafana on Openshift.
This is a restriction of the Grafana operator.

Example `dmn-drools-quarkus-metrics` run locally: 

curl http://localhost:8080/monitoring/dashboards/list.json

[ "domain-dashboard-dmn-drools-quarkus-metrics_2.0.0-SNAPSHOT-Hello.json", "operational-dashboard-dmn-drools-quarkus-metrics_2.0.0-SNAPSHOT-hello.json", "operational-dashboard-dmn-drools-quarkus-metrics_2.0.0-SNAPSHOT-LoanEligibility.json", "domain-dashboard-dmn-drools-quarkus-metrics_2.0.0-SNAPSHOT-LoanEligibility.json" ]