engine: Ignore releasenotes directory

Change-Id: Idf0632bb9cb82184c2f0b393a201025bc41d8049
diff --git a/jjb/engine/scripts/functest.sh b/jjb/engine/scripts/functest.sh
index 8799ce9..e942011 100755
--- a/jjb/engine/scripts/functest.sh
+++ b/jjb/engine/scripts/functest.sh
@@ -29,8 +29,8 @@
 
 # NOTE (fdegir): delete unnecessary stuff to free up space on baremetal jumphost
 sudo /bin/rm -rf /tmp/$ARTIFACT_TO_DOWNLOAD ~/.ara \
-    /opt/test /opt/stack /httpboot /opt/engine/offline/binaries /opt/engine/offline/containers \
-    /opt/engine/offline/dib /opt/engine/offline/pkg /tmp/kubespray_cache > /dev/null 2>&1 || true
+    /opt/test /opt/stack /httpboot /opt/engine/offline/binaries /opt/engine/offline/dib \
+    /tmp/kubespray_cache > /dev/null 2>&1 || true
 sudo docker images -a --format {{.ID}} | xargs -n 1 sudo docker rmi -f > /dev/null 2>&1 || true
 
 echo "Info  : Cloning infra/test repository"