switch to ndn-cxx KeyChain v2

ValidatorConfig is temporarily disabled. All commands are
authorized without validation.

refs #4091

Change-Id: I4eea8cd954761424d2d084bda4e8510320b5fb46
diff --git a/src/handles/watch-handle.cpp b/src/handles/watch-handle.cpp
index 25ce278..97aea8f 100644
--- a/src/handles/watch-handle.cpp
+++ b/src/handles/watch-handle.cpp
@@ -25,7 +25,7 @@
 static const milliseconds DEFAULT_INTEREST_LIFETIME(4000);
 
 WatchHandle::WatchHandle(Face& face, RepoStorage& storageHandle, KeyChain& keyChain,
-                         Scheduler& scheduler, ValidatorConfig& validator)
+                         Scheduler& scheduler, Validator& validator)
   : BaseHandle(face, storageHandle, keyChain, scheduler)
   , m_validator(validator)
   , m_interestNum(0)