Revert "Upgrade to Spring Data Ingalls-SR2"

This commit reverts 65a82576 as the Couchbase driver must be upgraded from
2.3.x to 2.4.x

See gh-8939

spring-boot-dependencies/pom.xml

@@ -155,7 +155,7 @@
 		<spring-amqp.version>1.7.2.RELEASE</spring-amqp.version>
 		<spring-cloud-connectors.version>1.2.3.RELEASE</spring-cloud-connectors.version>
 		<spring-batch.version>3.0.7.RELEASE</spring-batch.version>
-		<spring-data-releasetrain.version>Ingalls-SR2</spring-data-releasetrain.version>
+		<spring-data-releasetrain.version>Ingalls-SR1</spring-data-releasetrain.version>
 		<spring-hateoas.version>0.23.0.RELEASE</spring-hateoas.version>
 		<spring-integration.version>4.3.9.RELEASE</spring-integration.version>
 		<spring-integration-java-dsl.version>1.2.1.RELEASE</spring-integration-java-dsl.version>