Polish contribution

Closes gh-5511

spring-boot-samples/spring-boot-sample-data-elasticsearch/pom.xml

@@ -26,6 +26,13 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>net.java.dev.jna</groupId>
+			<artifactId>jna</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>

spring-boot-samples/spring-boot-sample-data-elasticsearch/src/main/resources/application.properties

@@ -0,0 +1,5 @@
+#
+# Home directory of the embedded elastic instance. Default to the
+# current working directory.
+#
+spring.data.elasticsearch.properties.path.home=target/elastic