Setup JAVA_HOME for cloudera java distro

This patch makes jdk dependency for cloudera plugin and
setup JAVA_HOME for this plugin.
This is needed for correct work of ssl.

Note: as we have added java dependency so we need to export
DIB_JAVA_DISTRO variable for passing check in
'.../elements/java/pre-install.d/00-check-java'

Change-Id: Ic505eb059783625a4f2e452414b45202a5730caf

elements/hadoop-cloudera/element-deps

@@ -1,3 +1,4 @@
 extjs
+java
 package-installs
 ssh

elements/hadoop-cloudera/environment.d/01-set-java-distro

@@ -0,0 +1 @@
+export DIB_JAVA_DISTRO="cloudera-jdk"

elements/hadoop-cloudera/install.d/34-java

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+if [ -z "${DIB_CDH_HDFS_ONLY:-}" ]; then
+    echo "Installing Oracle JDK for Cloudera"
+
+    pkg="oracle-j2sdk1.7"
+    install-packages $pkg
+
+    JDK_HOME=""
+    case $DISTRO_NAME in
+        centos | centos7 | rhel )
+            JDK_HOME=$(find /usr/java -name 'jdk*cloudera' -print)
+        ;;
+        ubuntu )
+            JDK_HOME="/usr/lib/jvm/java-7-oracle-cloudera"
+        ;;
+    esac
+
+    JRE_HOME=$JDK_HOME/jre
+
+    setup-java-home $JRE_HOME $JDK_HOME
+else
+    echo "Skip this step. JDK has already been installed for Spark."
+fi

elements/hadoop-cloudera/install.d/50-install-cloudera

@@ -30,7 +30,6 @@ if [ -z "${DIB_CDH_HDFS_ONLY:-}" ]; then
         hive-webhcat-server \
         hue \
         oozie \
-        oracle-j2sdk1.7 \
         spark-core \
         zookeeper