[AETHER-72][AETHER-75] Update atomix to 3.1.9

Additionally fix an issue brough by 24302

Change-Id: I60192953f0ebef6730ad6268b10bbf8a59934156
diff --git a/tools/test/bin/atomix-push-bits b/tools/test/bin/atomix-push-bits
index e0375bd..d82321c 100755
--- a/tools/test/bin/atomix-push-bits
+++ b/tools/test/bin/atomix-push-bits
@@ -26,7 +26,7 @@
 
 . $ONOS_ROOT/tools/build/envDefaults
 
-ATOMIX_VERSION=${ATOMIX_VERSION:-3.1.5}
+ATOMIX_VERSION=${ATOMIX_VERSION:-3.1.9}
 ATOMIX_MAVEN=~/.m2/repository/io/atomix/atomix-dist/$ATOMIX_VERSION/atomix-dist-$ATOMIX_VERSION.tar.gz
 ATOMIX_LOCAL=/tmp/atomix-$ATOMIX_VERSION.tar.gz
 ATOMIX_REMOTE=https://oss.sonatype.org/content/repositories/releases/io/atomix/atomix-dist/$ATOMIX_VERSION/atomix-dist-$ATOMIX_VERSION.tar.gz