Service group and service object for FWaaS
blueprint fwaas-customized-service

In the traditional firewall design a service is used to define type of traffic
in firewall. This blueprint creates an extension that allows the firewall
administrators to create customized service objects. The customized service
objects can be grouped together to form a service group object. The policy
rule of FWaaS can reference more than one type of traffic by referencing to
service group objects.

Change-Id: I7a05799a2f8e51438852267cd62d1030ae74ceab
Merge "Service group and service object for FWaaS blueprint fwaas-customized-service"