Remove unneeded pieces

examples/spark/images/base/Dockerfile

 FROM java:latest
 
-RUN apt-get update -y
-RUN apt-get install -y scala
-
 ENV hadoop_ver 2.6.1
 ENV spark_ver 1.5.1
 
@@ -30,7 +27,6 @@ RUN mkdir -p /opt && \
 RUN wget -O /opt/spark/lib/gcs-connector-latest-hadoop2.jar https://storage.googleapis.com/hadoop-lib/gcs/gcs-connector-latest-hadoop2.jar
 
 ADD log4j.properties /opt/spark/conf/log4j.properties
-ADD setup_client.sh /
 ADD start-common.sh /
 ADD core-site.xml /opt/spark/conf/core-site.xml
 ADD spark-defaults.conf /opt/spark/conf/spark-defaults.conf

examples/spark/images/base/setup_client.sh

-#!/bin/bash
-
-# Copyright 2015 The Kubernetes Authors All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-if [[ $# != 2  || $1 == "" || $2 == "" ]]; then
-    echo "Usage: . ./setup_client.sh master_address master_port"
-    exit 1
-fi
-
-echo "$1 spark-master" >> /etc/hosts
-export SPARK_LOCAL_HOSTNAME=$(hostname -i)
-export MASTER=spark://spark-master:$2