Update apache karaf to version 4.2.3

Change-Id: If9aadfa2715a3f100df6e34e25789e74399759a0
diff --git a/tools/test/bin/onos-check-bits b/tools/test/bin/onos-check-bits
index 4954638..fe99f1b 100755
--- a/tools/test/bin/onos-check-bits
+++ b/tools/test/bin/onos-check-bits
@@ -32,7 +32,7 @@
   echo "ONOS archive does not contain the proper version file" && exit 1
 fi
 
-tar tzf ${ONOS_TAR} | grep -q apache-karaf-4.2.2
+tar tzf ${ONOS_TAR} | grep -q apache-karaf-4.2.3
 if [ $? -ne 0 ]; then
   echo "ONOS archive does not contain karaf" && exit 1
 fi