MinIO custom S3 endpoint does not support our `touch` implementation

[pjbull]

Our touch implementation depends on the MetadataDirective="REPLACE":

cloudpathlib/cloudpathlib/s3/s3client.py

Lines 158 to 165 in de6b547

	# just a touch, so "REPLACE" metadata
	if src == dst:
	o = self.s3.Object(src.bucket, src.key)
	o.copy_from(
	CopySource={"Bucket": src.bucket, "Key": src.key},
	Metadata=self._get_metadata(src).get("extra", {}),
	MetadataDirective="REPLACE",
	)

However, this fails our test for touch when the rig is custom_s3_rig running against our MinIO test server:

cloudpathlib/tests/test_cloudpath_file_io.py

Lines 61 to 66 in de6b547

	before_touch = datetime.now()
	sleep(1)
	p.touch()
	if not getattr(rig, "is_custom_s3", False):
	# Our S3Path.touch implementation does not update mod time for MinIO
	assert datetime.fromtimestamp(p.stat().st_mtime) > before_touch

I suspect that MinIO doesn't support this S3 functionality yet or it is a bug. We potentially could workaround by checking if the endpoint_url is set to a non-AWS URL and potentially do the fallback entire copy in that case.

This needs research to understand if this is a MinIO bug we could file to be fixed upstream or if we should workaround it.

When this is fixed, we should re-enable this test.