Fixed two bugs that could cause infinite loops

[DanteNiewenhuis]

Summary

Fixed two bugs that could create infinite loops:

In SimTraceWorkload, it could be the case that the the remaining work for a trace is so small, that it would make the remaining duration also 0. In that case, it would look forever. I have added an extra check that solves this problem.

In SimDistributor I was changing element of a Hashset while looping over the Hashset. This crashes java.
I solved this by creating a new Hashset.

Implementation Notes ⚒️

N / A

External Dependencies 🍀

N / A

Breaking API Changes ⚠️

N / A

Simply specify none (N/A) if not applicable.

[vlogic]

Looks good, I tested it locally the example trace with the example experiment is now working again.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (20d8587) to head (7923b1f).
Report is 1 commits behind head on master.

Additional details and impacted files

@@      Coverage Diff      @@
##   master   #304   +/-   ##
=============================
=============================

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.