service disappears after agent restart

### `consul version` for both Client and Server
Client: `Version: 'v0.8.5'`
Server: `Version: 'v0.8.5'`

### Operating system and Environment details
CentOS Linux release 7.3.1611 (Core)

### Description of the Issue (and unexpected/desired result)
After server or client restart services disappear and the following error messages are seen in logs

2017/08/01 11:59:46 [ERR] consul: RPC failed to server IP_ADDRESS:8300: rpc error: rpc error: ACL not found
2017/08/01 11:59:46 [ERR] agent: failed to sync changes: rpc error: rpc error: ACL not found

### Reproduction steps
1. Register A Service - with or without health check
2. Expire/remove the token which used for service registration
3. Restart consul node which the service has been registered to
4. Service disappeared
5. The above error message appears in the log

### Workaround (?)
if token manually changed to a valid token in consul-data/services/service_definition_file then service appears with no error - are services binded to tokens ?