'Get the values for Nova specific quotas
Example GET:
http://localhost/api/nova/quota-sets/defaults/'

@rest_utils.ajax()
def get(self, request):

    if api.base.is_service_enabled(request, 'compute'):
        quota_set = api.nova.default_quota_get(request, request.user.tenant_id)
        disabled_quotas = quotas.get_disabled_quotas(request)
        filtered_quotas = [quota for quota in quota_set if (quota.name not in disabled_quotas)]
        result = [{'display_name': (quotas.QUOTA_NAMES.get(quota.name, quota.name.replace('_', '    ').title()) + ''), 'name': quota.name, 'limit': quota.limit} for quota in filtered_quotas]
        return {'items': result}
    else:
        raise rest_utils.AjaxError(501, _('Service    Nova    is    disabled.'))
