* switch new_order to use crypto_util._pyopenssl_cert_or_req_san
* move certbot.crypto_util._get_names_from_loaded_cert_or_req functionality to acme.crypto_util._pyopenssl_cert_or_req_all_names
* delint
* refactor client tests
* Add test for new order and fix identifiers parsing.
* Add poll_and_finalize test
* Test and fix poll_authorizations timeout
* Add test_failed_authorizations
* Add test_poll_authorizations_success
* Test and fix finalize_order success
* add test_finalize_order_timeout
* add test_finalize_order_error
* test sleep code
This adds two new classes in messages: Order and OrderResource. It also adds methods to ClientV2 to create orders, and poll orders then request issuance.
The CSR is stored on the OrderResource so it can be carried along and submitted when it's time to finalize the order.
Detects acme version by checking for newNonce field in the directory, since it's mandatory. Also updates ClientNetwork.account on register and update_registration.
* add mechanism to detect acme version
* update ClientNetwork.account comment
* switch to MultiVersionClient object in acme
* add shim methods
* add returns
* use backwards-compatible format and implement register
* update to actual representation of tos v2
* add tos fields and pass through to v1 for partial updates
* update tests
* pass more tests
* allow instance variable pass-through and lint
* update certbot and tests to use new_account_and_tos method
* remove --agree-tos test from main_test for now because we moved the callback into acme
* add docstrings
* use hasattr
* all most review comments
* use terms_of_service for both v1 and v2
* add tests for acme/client.py
* tests for acme/messages.py
