pitest: increase mutation coverage for indentation profile to 100%

[rnveach]

We should increase coverage for indentation profile up to 100%.
This issue is a subtask of #3708

---

[rohit9625]

Is somebody working on this issue?

[nrmancuso]

@rohit9625 no one is working on this issue, please be aware that this is most difficult pitest coverage issue we have. If you want to begin working on it, please kill one mutation per PR only.

[sktpy]

Is there any thing that I might need to be aware of before I take this issue?(asking because it has been a while since this was created), else I can start working on it. 🚀

[nrmancuso]

Is there any thing that I might need to be aware of before I take this issue?(asking because it has been a while since this was created), else I can start working on it. 🚀

@sktpy

1. ROI is low
2. Difficulty will be likely be high
3. Surviving mutations can be found at

   checkstyle/config/pitest-suppressions/pitest-indentation-suppressions.xml

   Line 2 in 72fa053

   <suppressedMutations>

[sktpy]

ROI is low

If that is the case, will focus on the issues that will be more impactful for our end users, but will visit this one periodically so that I can meet and greet boss level mutants. 👾