Fix failing sweep runner image wrapper MPI test

[yousefmoazzam]

Fixes #434

Checklist

• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] I have made corresponding changes to the documentation

[yousefmoazzam]

It's just paganin memory hook tests that are failing in CI, which is expected and going to be resolve int he near future, so I'm going to merge this.