signature: Update TLV encoding/decoding
signature: Update TLV encoding/decoding

Change-Id: I7aa6909f17432429be01d3c05115ccaef6049730

cawka/packaging-ndn-cpp-dev,cawka/packaging-ndn-cpp-dev,cawka/packaging-ndn-cpp-dev,cawka/packaging-ndn-cpp-dev