[ndnSIM] Disambiguating logging component name of CertificateFetcherFromNetwork

NS-3 logger prevents creation the same logging components at run-time.

Change-Id: I01fa76eabc327a5638627b27bc51e6330d5ad11a
diff --git a/src/security/v2/certificate-fetcher-from-network.cpp b/src/security/v2/certificate-fetcher-from-network.cpp
index 5d7bcaa..8c4d362 100644
--- a/src/security/v2/certificate-fetcher-from-network.cpp
+++ b/src/security/v2/certificate-fetcher-from-network.cpp
@@ -27,7 +27,7 @@
 namespace security {
 namespace v2 {
 
-NDN_LOG_INIT(ndn.security.v2.CertificateFetcher);
+NDN_LOG_INIT(ndn.security.v2.CertificateFetcher.FromNetwork);
 
 #define NDN_LOG_DEBUG_DEPTH(x) NDN_LOG_DEBUG(std::string(state->getDepth() + 1, '>') << " " << x)
 #define NDN_LOG_TRACE_DEPTH(x) NDN_LOG_TRACE(std::string(state->getDepth() + 1, '>') << " " << x)