[BUG]: test_add_scores_stage_pipe intermittently fails

[dagardner-nv]

Version

22.11

Which installation method(s) does this occur on?

Source

Describe the bug.

This test has failed a few times in CI with the following error:

FAILED test_add_scores_stage_pipe.py::test_add_scores_stage_pipe[use_python-10-2048-C] - pandas.errors.EmptyDataError: No columns to parse from file

Related to #423 & #427

Minimum reproducible example

No response

Relevant log output

FAILED test_add_scores_stage_pipe.py::test_add_scores_stage_pipe[use_python-10-2048-C] - pandas.errors.EmptyDataError: No columns to parse from file

### Full env printout

_No response_

### Other/Misc.

_No response_

### Code of Conduct

- [X] I agree to follow Morpheus' Code of Conduct
- [X] I have searched the [open bugs](https://github.com/nv-morpheus/Morpheus/issues?q=is%3Aopen+is%3Aissue+label%3Abug) and have found no duplicates for this bug report

[mdemoret-nv]

I also see issues with this test that look like:

FAILED tests/test_add_scores_stage_pipe.py::test_add_scores_stage_pipe[use_python-10-2048-C] - RuntimeError: dictionary changed size during iteration
FAILED tests/test_add_scores_stage_pipe.py::test_add_scores_stage_multi_segment_pipe[use_python] - RuntimeError: dictionary changed size during iteration

Which is due to the repeat option on the FileSource stage. This will be fixed in PR #427. @dagardner-nv Do you think they are related?

[dagardner-nv]

Which is due to the repeat option on the FileSource stage. This will be fixed in PR #427. @dagardner-nv Do you think they are related?

I saw the same thing, I added an explicit test for that by parameterizing the repeat value
23e3304

[dagardner-nv]

This bug appears to be fixed by #444
I'm running the test in a loop to be sure, but it hasn't failed yet.