DATAES-404 - Updated changelog.

Author: mp911de

src/main/resources/changelog.txt

@@ -1,6 +1,12 @@
 Spring Data Elasticsearch Changelog
 ===================================
 
+Changes in version 2.1.9.RELEASE (2017-11-27)
+---------------------------------------------
+* DATAES-408 - Ensure Spring 5 compatibility in Ingalls.
+* DATAES-404 - Release 2.1.9 (Ingalls SR9).
+
+
 Changes in version 3.0.1.RELEASE (2017-10-27)
 ---------------------------------------------
 * DATAES-410 - Adapt API changes in Property in test cases.