[ZEPPELIN-3017] fix Spark version in Dockerfiles

### What is this PR for? The PR updates Spark version to the current 2.1.2, since the one which is present now (2.1.1) is not available anymore. ### What type of PR is it? Fix ### What is the Jira issue? https://issues.apache.org/jira/browse/ZEPPELIN-3017 ### How should this be tested? manually Author: mark91 <marcogaido91@gmail.com> Closes apache#2636 from mgaido91/ZEPPELIN-3017 and squashes the following commits: b3cfb44 [mark91] [ZEPPELIN-3017] fix Spark version in Dockerfiles
datalayer-attic · Nov 6, 2017 · 2674291 · 2674291
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commit 2674291
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diff --git a/scripts/docker/spark-cluster-managers/spark_mesos/Dockerfile b/scripts/docker/spark-cluster-managers/spark_mesos/Dockerfile
@@ -15,7 +15,7 @@
 FROM centos:centos6
 
 ENV SPARK_PROFILE 2.1
-ENV SPARK_VERSION 2.1.1
+ENV SPARK_VERSION 2.1.2
 ENV HADOOP_PROFILE 2.7
 ENV HADOOP_VERSION 2.7.0
 

diff --git a/scripts/docker/spark-cluster-managers/spark_standalone/Dockerfile b/scripts/docker/spark-cluster-managers/spark_standalone/Dockerfile
@@ -15,7 +15,7 @@
 FROM centos:centos6
 
 ENV SPARK_PROFILE 2.1
-ENV SPARK_VERSION 2.1.1
+ENV SPARK_VERSION 2.1.2
 ENV HADOOP_PROFILE 2.7
 ENV SPARK_HOME /usr/local/spark
 

diff --git a/scripts/docker/spark-cluster-managers/spark_yarn_cluster/Dockerfile b/scripts/docker/spark-cluster-managers/spark_yarn_cluster/Dockerfile
@@ -15,7 +15,7 @@
 FROM centos:centos6
 
 ENV SPARK_PROFILE 2.1
-ENV SPARK_VERSION 2.1.1
+ENV SPARK_VERSION 2.1.2
 ENV HADOOP_PROFILE 2.7
 ENV HADOOP_VERSION 2.7.0