JIRA: https://jira.spring.io/browse/INT-4324
The `preserve-timestamp` attribute for the
`<int-file:outbound-channel-adapter>` has been missed for parsing in
the `FileWritingMessageHandlerBeanDefinitionBuilder` and propagation
in the `FileWritingMessageHandlerFactoryBean`
**Cherry-pick to 4.3.x**
Conflicts:
spring-integration-file/src/main/java/org/springframework/integration/file/config/FileWritingMessageHandlerBeanDefinitionBuilder.java
spring-integration-file/src/main/java/org/springframework/integration/file/config/FileWritingMessageHandlerFactoryBean.java
spring-integration-file/src/test/java/org/springframework/integration/file/config/FileOutboundChannelAdapterParserTests-context.xml
spring-integration-file/src/test/java/org/springframework/integration/file/config/FileOutboundChannelAdapterParserTests.java
Resolved.
daa927e7a4