FaceCounters for LpFace consist of LinkService::Counters and
Transport::Counters. Old FaceCounters class from 2014 face architecture is
renamed as OldFaceCounters, and can be wrapped with new FaceCounters class.
OldFaceCounters is only used in old Face subclasses.
This commit also updates existing face test suites to use new FaceCounters,
updates ForwarderStatus so that it does not rely on FaceCounters,
and moves the logic of copying face properties and counters into management
structs from face system into FaceManager.
refs #3177
Change-Id: I587e8a32fa72bac3af9d750b2c88342740aa08d6
LpFace: new Face implementation
LpFaceWrapper: allows new Face system to work with old Face system
Eventually, LpFace will be renamed to Face and LpFaceWrapper will be removed.
refs #3088#3179
Change-Id: Ia4ad7c84631e65b444d4f24e1d7593392927c8db
Junxiao Shi
Eric Newberry