tools/ndns-daemon: fix bug that validator cannot fetch certificate

refs #2206

Change-Id: I10c69d95e6a5fd020038211ce419763fd62afcb3
mgmt: management tools

refs #2034

Change-Id: I43ff11e0aa7e67f6207e75f139b7417779590efc
tools: management tools

refs #2034

Change-Id: Ib110e2d0e1214c3e95408a7f4d4679395e519319
tools: add ndns-demo

Change-Id: I250d7bf8a02ffec8aee3226bbf830bc3e9bbfa3f
tools: add NdnsShot

Change-Id: Ia34e0228e6e9164239f3412e5c419f965e35daec
patch shell

Change-Id: I15171cf06f3b9b3e55909109a3bf99d2d6176a35
set root zone at h243