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.

spring-cloud-function-web/pom.xml

@@ -16,18 +16,8 @@
 
 	<dependencies>
 		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-web</artifactId>
-			<exclusions>
-				<exclusion>
-					<groupId>com.fasterxml.jackson.core</groupId>
-					<artifactId>jackson-databind</artifactId>
-				</exclusion>
-				<exclusion>
-					<groupId>org.hibernate</groupId>
-					<artifactId>hibernate-validator</artifactId>
-				</exclusion>
-			</exclusions>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-webmvc</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>com.google.code.gson</groupId>
@@ -36,13 +26,28 @@
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-function-context</artifactId>
-			<version>${project.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>javax.servlet-api</artifactId>
+			<scope>provided</scope>
+		</dependency>
+		<dependency>
+			<groupId>commons-logging</groupId>
+			<artifactId>commons-logging</artifactId>
+			<version>1.2</version>
+			<scope>provided</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 
 	<build>