anchor.diff:  |ports |URI | |
   |A GET against this URI returns the list of ports.
   
  +|qosPolicies |URI | |
  +|A GET against this URI returns the list of QoS policies.
  +
   |routers |URI | |
   |A GET against this URI returns the list of routers.
   
  
positive.code: * ICMP: Internet Control Message Protocol
  * JSON: JavaScript Object Notation
  * REST: REpresentational State Transfer
  * TOS: Type Of Service
  * URI: Uniform Resource Identifier
  * URL: Uniform Resource Locator
  
negative.code:   "portGroupTemplate":"http://example.com/midonet-api/port_groups/{id}",
    "ports":"http://example.com/midonet-api/ports",
    "portTemplate":"http://example.com/midonet-api/ports/{id}",
    "qosBwLimitRuleTemplate": "http://example.com/midonet-api/qos_bw_limit_rules/{id}",
    "qosDscpRuleTemplate": "http://example.com/midonet-api/qos_dscp_rules/{id}",
    "qosPolicies": "http://example.com/midonet-api/qos_policies"
    "qosPolicyTemplate": "http://example.com/midonet-api/qos_policies/{id}",
    "routers":"http://example.com/midonet-api/routers",
    "routerTemplate":"http://example.com/midonet-api/routers/{id}",
    "routeTemplate":"http://example.com/midonet-api/routes/{id}",
  