face, mgmt: improve face creation failure and bad URI handling

Prevent creation of faces to endpoints owned by NFD instance

Prevent creation of UDP broadcast faces (255.255.255.255 and
those belonging to machine's interfaces) in response to
face creation command

Sanity check configuration file port numbers in face manager

refs: #1414, #1427

Change-Id: Ia3f0a9337f3d97c34388773eab05bc39ad6dd804