Add new util function to fetch/return clusterId from CR resource if cluster is OpenShift

[jeremyary]

@redhatHameed can point you towards a code example for fetching clusterId and returning value

[redhatHameed]

@jeremyary here https://github.com/RHEcosystemAppEng/dbaas-operator/blob/e57d684066d56dd9513cbdf12b05def415fb21e8/controllers/reconcilers/providers_installation/observability-operator.go#L82