Add an element to install the HEAT JEOS tools.

Change-Id: Id1d96479142dbfbba2265ab8ec5f242146a03b19

elements/heat-jeos/README.md

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+Install the Heat JEOS "cfn" (for CloudFormation) tools to enable HEAT
+templates to make use of advanced features of HEAT such as watches and
+AWS::CloudFormation::Init

elements/heat-jeos/install.d/05-heat-jeos

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+#!/bin/sh
+
+set -uex
+
+CFN_TOOLS_ROOT=/opt/aws/bin # Heat hard codes this
+
+HEAT_API_SOURCE=https://github.com/heat-api/heat-jeos.git
+
+OS_ROOT=/opt/stack
+JEOS_ROOT=$OS_ROOT/heat-jeos
+
+DEBIAN_FRONTEND=noninteractive apt-get -y install git-core python-psutil
+
+mkdir -p $OS_ROOT
+git clone $HEAT_API_SOURCE $JEOS_ROOT
+cd $JEOS_ROOT
+git checkout master
+
+mkdir -p $CFN_TOOLS_ROOT
+ln -sf $JEOS_ROOT/heat_jeos/cfntools/* $CFN_TOOLS_ROOT