Include java.xml.ws module when running on Java 9

See gh-7226

spring-boot-samples/spring-boot-sample-webservices/pom.xml

@@ -51,4 +51,23 @@
 			</plugin>
 		</plugins>
 	</build>
+	<profiles>
+		<profile>
+			<id>java9</id>
+			<activation>
+				<jdk>9</jdk>
+			</activation>
+			<build>
+				<plugins>
+					<plugin>
+						<groupId>org.apache.maven.plugins</groupId>
+						<artifactId>maven-surefire-plugin</artifactId>
+						<configuration>
+							<argLine>--add-modules java.base,java.xml.ws</argLine>
+						</configuration>
+					</plugin>
+				</plugins>
+			</build>
+		</profile>
+	</profiles>
 </project>