NFD

This may not be nfdc problem (could be in FaceManager)

When trying to destroy face, face is actually destroyed, but nfdc shows an error:

ERROR: Face destroy failed: Requested decoding of FaceManagementOptions, but Block is of different type

Steps to reproduce:

sudo ./build/nfd

NFD=1 ./build/bin/nfdc create udp://1.1.1.1
NFD=1 ./build/bin/nfdc destroy <face-from-create>