mgmt: added FaceManager to create and destroy faces

Change-Id: I5a7ca67faed1bfd850943fe4c93675d84c79ac39
Refs: #1195
mgmt, main: add strategy choice management and deprecate fib/set-strategy

refs: #1311

Change-Id: Icc88f201f3c13a5a25ec1bdadec35f93c76b2b94