core, main: make missing config file section behavior configurable

refs: #1499

Change-Id: I01cce3c73214f592d8c342d8aeda4fbafc6804b8
diff --git a/rib/rib-manager.cpp b/rib/rib-manager.cpp
index d5f26f2..27f7f3c 100644
--- a/rib/rib-manager.cpp
+++ b/rib/rib-manager.cpp
@@ -91,7 +91,7 @@
 void
 RibManager::setConfigFile(ConfigFile& configFile)
 {
-  configFile.addSectionHandler("security",
+  configFile.addSectionHandler("rib_security",
                                bind(&RibManager::onConfig, this, _1, _2, _3));
 }