Ming Rui Zhang authored Jul 24, 2019 and Adrien Béraud committed Jul 31, 2019

- provide the user the ability to bind ip addresses for sip/IPtoIP account
  freely, IPtoIP will be given more freedom to switch between ipv4 and ipv6
  according to the parameter given

Change-Id: I364ad8a2acab4480a35a87baf3f7eb8e7ac72b36