[elasticsearch] Add logging when adding password to keystore

This adds the same logging that occurs for all of the other keystore
items being added. Useful so that you can be sure that the bootstrap
password is properly being added when `ELASTIC_PASSWORD` is set.

elasticsearch/templates/statefulset.yaml

@@ -161,7 +161,10 @@ spec:
           done
 
           # Add the bootstrap password since otherwise the Elasticsearch entrypoint tries to do this on startup
-          [ ! -z ${ELASTIC_PASSWORD+x} ] && echo "$ELASTIC_PASSWORD" | elasticsearch-keystore add -x bootstrap.password
+          if [ ! -z ${ELASTIC_PASSWORD+x} ]; then
+            echo 'Adding env $ELASTIC_PASSWORD to keystore as key bootstrap.password'
+            echo "$ELASTIC_PASSWORD" | elasticsearch-keystore add -x bootstrap.password
+          fi
 
           cp -a /usr/share/elasticsearch/config/elasticsearch.keystore /tmp/keystore/
         env: {{ toYaml .Values.extraEnvs | nindent 10 }}