Protect TrickOps progres bar from divide by zero

[ddj116]

Closes #1663

[ddj116]

@hchen99 per your request here's the MR with only this change. Since TrickOps is now a critical part of our workflow, both this and #1662 will be needed for EG to move forward with Trick on Rocky 8 Linux, which is coming to our lab likely in early April.

[coveralls]

coverage: 55.911% (+0.002%) from 55.909%
when pulling 9d960cc on 1663-trickops-protect-div-zero
into 2ac342c on master.

[hchen99]

Thanks for the PR. It looks very straightforward. Will try to merge both of your PRs if not this week probably early next week.