'Lists summary information for all stacks.'

@util.policy_enforce
def index(self, req):

    global_tenant = False
    name = rpc_api.PARAM_GLOBAL_TENANT
    if (name in req.params):
        global_tenant = self._extract_bool_param(name, req.params.get(name))
    if global_tenant:
        return self.global_index(req, req.context.tenant_id)
    return self._index(req)
