[bs-19] Medley of changes supporting integration apps

* Use file adapters in sample instead of internal flow
* Add Exception to signature of CommandLineRunner for
implementation convenience
* Updates for Security snapshots

spring-bootstrap-samples/spring-bootstrap-integration-sample/pom.xml

@@ -25,7 +25,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.integration</groupId>
-			<artifactId>spring-integration-stream</artifactId>
+			<artifactId>spring-integration-file</artifactId>
 			<version>${dependency.spring.integration.version}</version>
 		</dependency>
 		<dependency>