Upgrade to apache karaf 4.2.9

Change-Id: Id42b0b0893ee81cb54a50bf6c76da024a9a2d2a8
diff --git a/tools/build/build-offline-karaf b/tools/build/build-offline-karaf
index 554f532..3563c49 100755
--- a/tools/build/build-offline-karaf
+++ b/tools/build/build-offline-karaf
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-KARAF_RELEASE_VERSION="4.2.8"
-KARAF_BASE_PACKAGE_VERSION="4.2.8"
+KARAF_RELEASE_VERSION="4.2.9"
+KARAF_BASE_PACKAGE_VERSION="4.2.9"
 KARAF_TARFILE_NAME="apache-karaf-${KARAF_RELEASE_VERSION}.tar"
 ADDED_BOOT_FEATURES="kar/${KARAF_RELEASE_VERSION},webconsole/${KARAF_RELEASE_VERSION},scr/${KARAF_RELEASE_VERSION},war/${KARAF_RELEASE_VERSION}"