[cern] Pass CLUSTER_UUID to openstack-manila-csi Helm chart

This MR passes $CLUSTER_UUID env var to openstack-manila-csi Helm chart values.

For reference:

• CLUSTER_UUID: https://gitlab.cern.ch/cloud-infrastructure/magnum/-/blob/7b913b5a310899e1a1aa0b0d2038ac223bf9701f/magnum/drivers/k8s_fedora_coreos_v1/templates/kubemaster.yaml#L914
• clusterID in Helm chart: https://github.com/kubernetes/cloud-provider-openstack/blob/4d6ecb67ad4082a430333533b6644a86d64543ae/charts/manila-csi-plugin/values.yaml#L36-L38

OS-13830