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

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

    if api.cinder.is_volume_service_enabled(request):
        quota_set = api.cinder.default_quota_get(request, request.user.tenant_id)
        result = [{'display_name': (quotas.QUOTA_NAMES.get(quota.name, quota.name.replace('_', '    ').title()) + ''), 'name': quota.name, 'limit': quota.limit} for quota in quota_set]
        return {'items': result}
    else:
        raise rest_utils.AjaxError(501, _('Service    Cinder    is    disabled.'))
