Start building against Spring Integration 4.2.0 snapshots

See gh-2883

spring-boot-dependencies/pom.xml

@@ -125,7 +125,7 @@
 		<spring-batch.version>3.0.4.BUILD-SNAPSHOT</spring-batch.version>
 		<spring-data-releasetrain.version>Fowler-RELEASE</spring-data-releasetrain.version>
 		<spring-hateoas.version>0.16.0.RELEASE</spring-hateoas.version>
-		<spring-integration.version>4.1.3.RELEASE</spring-integration.version>
+		<spring-integration.version>4.2.0.BUILD-SNAPSHOT</spring-integration.version>
 		<spring-loaded.version>1.2.1.RELEASE</spring-loaded.version>
 		<spring-mobile.version>1.1.3.RELEASE</spring-mobile.version>
 		<spring-plugin.version>1.1.0.RELEASE</spring-plugin.version>

spring-boot-samples/spring-boot-sample-integration/src/main/resources/integration-context.xml

@@ -3,8 +3,8 @@
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xmlns:int="http://www.springframework.org/schema/integration"
 	xmlns:int-file="http://www.springframework.org/schema/integration/file"
-	xsi:schemaLocation="http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration-4.1.xsd
-		http://www.springframework.org/schema/integration/file http://www.springframework.org/schema/integration/file/spring-integration-file-4.1.xsd
+	xsi:schemaLocation="http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration-4.2.xsd
+		http://www.springframework.org/schema/integration/file http://www.springframework.org/schema/integration/file/spring-integration-file-4.2.xsd
 		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
 
 	<int-file:inbound-channel-adapter channel="input" directory="target/input" filename-pattern="*">

spring-boot-samples/spring-boot-sample-parent-context/src/main/resources/integration-context.xml

@@ -3,8 +3,8 @@
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xmlns:int="http://www.springframework.org/schema/integration"
 	xmlns:int-file="http://www.springframework.org/schema/integration/file"
-	xsi:schemaLocation="http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration-4.1.xsd
-		http://www.springframework.org/schema/integration/file http://www.springframework.org/schema/integration/file/spring-integration-file-4.1.xsd
+	xsi:schemaLocation="http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration-4.2.xsd
+		http://www.springframework.org/schema/integration/file http://www.springframework.org/schema/integration/file/spring-integration-file-4.2.xsd
 		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
 
 	<int-file:inbound-channel-adapter channel="input" directory="target/input" filename-pattern="*">