Rerun tests are not reported with "all" setting

[QuLogic]

When I run pytest -ra path/to/flaky/tests, I expect rerun tests to be listed, but they aren't. I would this is because 'R' is not something that pytest know about.

This can be worked around using pytest -raR path/to/flaky/tests, but it would be nice if -ra automatically included 'R' tests as well.