XSD refactoring to pull common attributes

Also introduce `remote-file-separator` since this option is available via Java Config

src/test/java/org/springframework/integration/aws/config/xml/S3InboundChannelAdapterParserTests-context.xml

@@ -38,6 +38,7 @@
 										preserve-timestamp="true"
 										filename-pattern="*.txt"
 										local-directory="."
+										remote-file-separator="\"
 										local-filename-generator-expression="#this.toUpperCase() + '.a' + @fooString"
 										comparator="comparator"
 										temporary-file-suffix=".foo"

src/test/java/org/springframework/integration/aws/config/xml/S3InboundChannelAdapterParserTests.java

@@ -87,8 +87,7 @@ public class S3InboundChannelAdapterParserTests {
 		assertThat(TestUtils.getPropertyValue(fisync, "preserveTimestamp", Boolean.class)).isTrue();
 		assertThat(TestUtils.getPropertyValue(fisync, "temporaryFileSuffix", String.class)).isEqualTo(".foo");
 		String remoteFileSeparator = (String) TestUtils.getPropertyValue(fisync, "remoteFileSeparator");
-		assertThat(remoteFileSeparator).isNotNull();
-		assertThat(remoteFileSeparator).isEmpty();
+		assertThat(remoteFileSeparator).isEqualTo("\\");
 		S3SimplePatternFileListFilter filter = TestUtils.getPropertyValue(fisync, "filter",
 				S3SimplePatternFileListFilter.class);
 		assertThat(filter).isNotNull();

src/test/java/org/springframework/integration/aws/config/xml/S3InboundStreamingChannelAdapterParserTests-context.xml

@@ -36,6 +36,7 @@
 												  auto-startup="false"
 												  comparator="comparator"
 												  filter="acceptOnceFilter"
+												  remote-file-separator="\"
 												  remote-directory-expression="foo/bar">
 		<int:poller fixed-rate="1000"/>
 	</int-aws:s3-inbound-streaming-channel-adapter>

src/test/java/org/springframework/integration/aws/config/xml/S3InboundStreamingChannelAdapterParserTests.java

@@ -78,7 +78,7 @@ public class S3InboundStreamingChannelAdapterParserTests {
 		assertThat(TestUtils.getPropertyValue(source, "comparator")).isSameAs(this.comparator);
 		String remoteFileSeparator = (String) TestUtils.getPropertyValue(source, "remoteFileSeparator");
 		assertThat(remoteFileSeparator).isNotNull();
-		assertThat(remoteFileSeparator).isEqualTo("/");
+		assertThat(remoteFileSeparator).isEqualTo("\\");
 
 		S3PersistentAcceptOnceFileListFilter filter = TestUtils.getPropertyValue(source, "filter",
 				S3PersistentAcceptOnceFileListFilter.class);