Test cloud transitions with subfolders

[petrutlucian94]

RGW cloud sync operations were unable to handle subfolders due to the fact that slashes were url encoded, causing mismatches between the source and destination object names.

We're updating the cloud transiton test, which exercises a similar code path. We'll ensure that subfolders are transferred properly.

[petrutlucian94]

Test result:

py run-test: commands[0] | pytest s3tests_boto3/functional/test_s3.py::test_lifecycle_cloud_transition
======================================== test session starts =========================================
platform linux -- Python 3.10.12, pytest-7.4.4, pluggy-1.3.0
cachedir: .tox/py/.pytest_cache
rootdir: /mnt/data/workspace/s3-tests
configfile: pytest.ini
collected 1 item

s3tests_boto3/functional/test_s3.py

.                                                          [100%]

=================================== 1 passed in 241.14s (0:04:01) ====================================
______________________________________________ summary _______________________________________________
  py: commands succeeded
  congratulations :)

[petrutlucian94]

@cbodley hi, I was wondering if you're still interested in this simple test that covers subfolders.