Sync stable-2.5 test infrastructure with devel: - shippable.yml - test/runner/ - test/sanity/ - test/utils/ - docs/docsite/rst/dev_guide/testing/sanity/ - test/integration/targets/*/aliases
* Remove uses of assert in production code * Fix assertion * Add code smell test for assertions, currently limited to lib/ansible * Fix assertion * Add docs for no-assert * Remove new assert from enos * Fix assert in module_utils.connection