* s3 integration tests
* Make s3 integration tests work in standard integration setup and with fish as current shell
see also https://github.com/ansible/proposals/issues/62 if you don't like this much
* test_s3 integration test - substitute command instead of shell where simple
* test_s3 integration test - random contents + complete elimination of use of shell module by moving to tempfile
* move s3 to integration test targets
* Add a couple more test for . in bucket names
Tidy syntax
remove reference to legacy credentials.yml
remove posix/cli/cloud/aws
* remove from legacy testing
* remove dependencies that aren't used
