Add repr and str for most classes used in parametrize

Signed-off-by: Andrey Berezin <a.berezin@yadro.com>

src/frostfs_testlib/s3/aws_cli_client.py

@@ -24,6 +24,8 @@ LONG_TIMEOUT = 240
 
 
 class AwsCliClient(S3ClientWrapper):
+    __repr_name__: str = "AWS CLI"
+
     # Flags that we use for all S3 commands: disable SSL verification (as we use self-signed
     # certificate in devenv) and disable automatic pagination in CLI output
     common_flags = "--no-verify-ssl --no-paginate"