Feature Proposal: Where possible, make auto-rerun tests run on a different machine

**Summary**
Proposal for the auto-rerun test feature to mandate (where possible) that the reruns happen on a different host.

**Details**
If a specific unit test failure is caused by something specific to a particular host, this change allows us to avoid that problem.

**Statistics Summary**
Tests which failed and reran on the same host: 84
...of which this many failed: 78
Tests which failed and reran on a different host: 173
...of which this many failed: 124

**Statistics Source**

[RerunStatsByHost.groovy.txt](https://github.com/user-attachments/files/17849299/RerunStatsByHost.groovy.txt)