use DummyClientFace from ndn-cxx

Change-Id: I82bd668662a790d6e336bbcad9a6357606323658
daemon: add NameServer

Change-Id: I64b82a0e9351bcc15691279470c807399480a474
add NdnsUpdate

Change-Id: Ia34e0228e6e9164239f3412e5c419f965e35daec
clients: add dig

Change-Id: I78822e9d68b36973362f0790f3c2f6e676cc6b94
ci: Enable coverage report and allow unit test output in XML format

Change-Id: I952654aa25d2bdfb5ba1885d1c7570cfdb7e3edf
ci: Enable Travis CI

Change-Id: I0b87242535ddc0443eea56ff349817aeae1117ff
mgmt: management tools

refs #2034

Change-Id: I43ff11e0aa7e67f6207e75f139b7417779590efc
tools: management tools

refs #2034

Change-Id: Ib110e2d0e1214c3e95408a7f4d4679395e519319