Add missing dependency management

See gh-5711

spring-boot-dependencies/pom.xml

@@ -510,6 +510,11 @@
 				<artifactId>spring-boot-starter-websocket</artifactId>
 				<version>1.4.0.BUILD-SNAPSHOT</version>
 			</dependency>
+			<dependency>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-starter-web-services</artifactId>
+				<version>1.4.0.BUILD-SNAPSHOT</version>
+			</dependency>
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-starter-ws</artifactId>