* Combine testing policies
Because of the maximum of 10 policies per group, need to
consolidate testing policies as best we can.
* Tidy put-account-setting tasks and add permission
Using `environment` and `command` rather than `shell` avoids the
need for `no_log` and means that people can fix the problem
* refactor ecs_cluster test suite
move from runme.sh technique to virtualenv
use ec2_instance rather than ec2 module to
avoid need for boto
People expect to be able to upload files to s3 using standard
locations for files.
Providing an action plugin that effectively rewrites the `src`
key to the result of finding such a file is a great help.
Tests added, and IAM permissions corrected
