Some dependency hygiene and update to Boot 1.5.10

The web module doesn't really need to depend on tomcat and all of
the Spring Boot web stack, but users need a way to grab that stuff
quickly if they want it (hence the new starter).

Also removed all spring-boot-starter dependencies from core and
context modules.

pom.xml

@@ -10,7 +10,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-build</artifactId>
-		<version>1.3.7.RELEASE</version>
+		<version>1.3.8.RELEASE</version>
 		<relativePath />
 	</parent>
 
@@ -58,6 +58,7 @@
 		<module>spring-cloud-function-stream</module>
 		<module>spring-cloud-function-task</module>
 		<module>spring-cloud-function-web</module>
+		<module>spring-cloud-starter-function-web</module>
 		<module>spring-cloud-function-samples</module>
 		<module>spring-cloud-function-deployer</module>
 		<module>spring-cloud-function-adapters</module>