Update ElasticBeanstalk platform to v2.0.6
Update ElasticBeanstalk platform to v2.0.6

Changelog includes:
* [new Amazon Linux AMI](https://aws.amazon.com/blogs/aws/now-available-amazon-linux-ami-2015-09/)
* [Python 2.7.10](https://aws.amazon.com/releasenotes/AWS-Elastic-Beanstalk/2349456301265270)
* Apache and mod_wsgi minor upgrades

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