- fix JAVA_HOME
- add java/jna jars to the CLASSPATH
- fix the config dir

Index: bin/opensearch-env
--- bin/opensearch-env.orig
+++ bin/opensearch-env
@@ -4,6 +4,8 @@ set -e -o pipefail
 
 CDPATH=""
 
+JAVA_HOME="$(${TRUEPREFIX}/bin/javaPathHelper -h opensearch)"
+
 SCRIPT="$0"
 
 UNAME=$(uname -s)
@@ -44,7 +46,7 @@ if [[ -z "$OPENSEARCH_HOME" ]]; then
 fi
 
 # now set the classpath
-OPENSEARCH_CLASSPATH="$OPENSEARCH_HOME/lib/*"
+OPENSEARCH_CLASSPATH="$OPENSEARCH_HOME/lib/*:${MODJAVA_JAR_DIR}/jna.jar:${MODJAVA_JAR_DIR}/jna-platform.jar"
 
 # now set the path to java: OPENSEARCH_JAVA_HOME -> JAVA_HOME -> bundled JRE -> bundled JDK
 if [ ! -z "$OPENSEARCH_JAVA_HOME" ]; then
@@ -101,7 +103,7 @@ fi
 export HOSTNAME=$HOSTNAME
 
 if [ -z "$OPENSEARCH_PATH_CONF" ]; then
-  if [ -z "$OPENSEARCH_PATH_CONF" ]; then OPENSEARCH_PATH_CONF="$OPENSEARCH_HOME"/config; fi
+  if [ -z "$OPENSEARCH_PATH_CONF" ]; then OPENSEARCH_PATH_CONF="${BASESYSCONFDIR}"/opensearch; fi
 fi
 
 if [ -z "$OPENSEARCH_PATH_CONF" ]; then