fix: default to ${DETECTOR}_full config

As of recently, epic.xml is only installed under that name in the install prefix. But build_detector does not install into the prefix that is loaded as detector path.

bin/env.sh

@@ -52,7 +52,7 @@ if [ ! -n  "${DETECTOR}" ] ; then
 fi
 
 if [ ! -n  "${DETECTOR_CONFIG}" ] ; then
-  export DETECTOR_CONFIG="${DETECTOR}"
+  export DETECTOR_CONFIG="${DETECTOR}_full"
 fi
 
 if [ ! -n  "${DETECTOR_VERSION}" ] ; then