Upgrade to Spring AMQP 1.5.0.M1

Closes gh-2946

spring-boot-dependencies/pom.xml

@@ -120,7 +120,7 @@
 		<solr.version>4.10.1</solr.version>
 		<spock.version>0.7-groovy-2.0</spock.version>
 		<spring.version>4.2.0.BUILD-SNAPSHOT</spring.version>
-		<spring-amqp.version>1.5.0.BUILD-SNAPSHOT</spring-amqp.version>
+		<spring-amqp.version>1.5.0.M1</spring-amqp.version>
 		<spring-cloud-connectors.version>1.1.1.RELEASE</spring-cloud-connectors.version>
 		<spring-batch.version>3.0.4.BUILD-SNAPSHOT</spring-batch.version>
 		<spring-data-releasetrain.version>Fowler-RELEASE</spring-data-releasetrain.version>