Upgraded to Camden SR5

This commit upgrades Spring Cloud Task to Camden SR5 and makes the
required changes to do so.

Resolves #276

spring-cloud-task-stream/pom.xml

@@ -41,6 +41,12 @@
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-deployer-spi</artifactId>
+			<exclusions>
+				<exclusion>
+					<groupId>org.springframework</groupId>
+					<artifactId>spring-core</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>