Fix spark-driver in examples/spark

examples/spark/images/driver/Dockerfile

@@ -1,4 +1,3 @@
 FROM gcr.io/google_containers/spark-base
 ADD start.sh /start.sh
-ADD log4j.properties /opt/spark/conf/log4j.properties
 CMD ["/start.sh"]

examples/spark/images/driver/start.sh

@@ -17,7 +17,7 @@
 echo "$SPARK_MASTER_SERVICE_HOST spark-master" >> /etc/hosts
 echo "SPARK_LOCAL_HOSTNAME=$(hostname -i)" >> /opt/spark/conf/spark-env.sh
 echo "MASTER=spark://spark-master:$SPARK_MASTER_SERVICE_PORT" >> /opt/spark/conf/spark-env.sh
-
+echo "Use kubectl exec spark-driver -it bash to invoke commands"
 while true; do
   sleep 100
 done

examples/spark/spark-driver.json

@@ -11,7 +11,7 @@
     "containers": [
       {
         "name": "spark-driver",
-        "image": "gurvin/spark-driver",
+        "image": "gcr.io/google_containers/spark-driver:1.4.0_v1",
         "resources": {
           "limits": {
             "cpu": "100m"