* Using ACME test container for acme_account integration test.
* Removing dependency on setup_openssl. Waiting for controller and Pebble.
* More tinkering.
* Reducing number of tries.
* One more try.
* Another try.
* Added acme_certificate tests.
* Removed double key.
* Added tests for acme_certificate_revoke.
* Making task names more meaningful (during certificate generation).
* Using newer test container which integrates letsencrypt/pebble#137. Adding test for revoking certificate by its private key.
* Using new version of Pebble which limits the random auth delay.
* Simplifying certificates for revocation tests.
* Reworking acme_certificate tests (there are now more, but they are faster).
* Test whether account_key_content works.
* Preparing TLS-ALPN-01 support.
* Using official Ansible image of testing container on quay.io.
* Bumping version.
* Bumping version of test container to 1.1.0.
* Adjusting to new CI group names.
* Pass ACME simulator IP as playbook variable.
* Let test plugin wait for controller and CA endpoints to become active.
* Refactor common setup parts of tests to setup_acme.
* _ -> dummy
* Moving common obtain-cert.yml to setup_acme.
* Update Shippable integration test groups.
* Update integration test group aliases.
* Rebalance AWS and Azure tests with extra group.
* Rebalance Windows tests with another group.
