Testcases for products-service,bookstore in java (#11)

* Testcases for products-service,bookstore
* Put back 'sap.capire.bookstore-Books_texts.csv' file, ignored it in DataLoader.

bookstore/srv/pom.xml

@@ -35,6 +35,11 @@
 			<groupId>org.xerial</groupId>
 			<artifactId>sqlite-jdbc</artifactId>
 		</dependency>
+		
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+		</dependency>
 	</dependencies>
 
 	<build>