face: close idle Datagram faces

refs #1281

Change-Id: Ifc766964f653d3991b55d76361c8b9bbe5d630cf
table:  shortcuts between FIB, PIT, Measurements, StrategyChoice

refs #1202

Change-Id: Ie63ab792e840de7e0889d385d3e8ea8a112cb7e5