This commits adds the FWaaS reference API documentation that used to earlier reside in netconn-api and has now been moved to the openstack-attic. Co-Authored-By: Vishnu Badveli <badveli_vishnuus@yahoo.com> Co-Authored-By: Vishwanath Jayaraman <vishwanathj@hotmail.com> Co-Authored-By: Sridar Kandaswamy <skandasw@cisco.com> (df) Corrected type errors and grammatical errors in common.ent. (df) Corrected formatting in common.ent. Closes-bug: #1425658 Change-Id: I58dfe3f40e35a8bd3d86e9e5d430adc37e4cd2db