Add changelog entry for #2902

Author: ppkarwasz

src/changelog/.3.x.x/move_flume_appender.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entry xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns="https://logging.apache.org/xml/ns"
+       xsi:schemaLocation="https://logging.apache.org/xml/ns https://logging.apache.org/xml/ns/log4j-changelog-0.xsd"
+       type="removed">
+  <issue id="2902" link="https://github.com/apache/logging-log4j2/issues/2902"/>
+  <description format="asciidoc">Move Flume Appender to its own release lifecycle.</description>
+</entry>