OCM-6294 | add /load_balancer_quota_values

[ahitacat]

Issue: https://issues.redhat.com/browse/OCM-6294

Using the List method to specify the load_balancer_quota_values, we spotted an issue on the meta-model.

This PR depends on the fix of that issue https://github.com/openshift-online/ocm-api-metamodel/pull/203

[ahitacat]

I prefer this approach more than the #922

[ahitacat]

The meta-model has been updated with the fix https://github.com/openshift-online/ocm-api-metamodel/pull/203

[tzvatot]

LGTM