[SPARK-26048][BUILD] Enable flume profile when creating 2.x releases.

Closes #23931 from vanzin/SPARK-26048.

Authored-by: Marcelo Vanzin <vanzin@cloudera.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>

Author: Marcelo Vanzin

dev/create-release/release-build.sh

@@ -116,14 +116,17 @@ SCALA_2_11_PROFILES=
 if [[ $SPARK_VERSION > "2.3" ]]; then
   BASE_PROFILES="$BASE_PROFILES -Pkubernetes"
   if [[ $SPARK_VERSION < "3.0." ]]; then
-    SCALA_2_11_PROFILES="-Pkafka-0-8"
+    SCALA_2_11_PROFILES="-Pkafka-0-8 -Pflume"
   fi
 else
   PUBLISH_SCALA_2_10=1
 fi
 
 PUBLISH_SCALA_2_12=0
 SCALA_2_12_PROFILES="-Pscala-2.12"
+if [[ $SPARK_VERSION < "3.0." ]]; then
+  SCALA_2_12_PROFILES="-Pflume"
+fi
 if [[ $SPARK_VERSION > "2.4" ]]; then
   PUBLISH_SCALA_2_12=1
 fi