Fix exporter restart

[ekneg54]

This fixes an error from previous health check implementation causing the exporter restarting on first start of logprep.

it was extracted from #668 to reduce amount of changes

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 94.29%. Comparing base (eca9240) to head (4be3e2d).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
logprep/run_logprep.py	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #677      +/-   ##
==========================================
+ Coverage   94.27%   94.29%   +0.02%     
==========================================
  Files         146      146              
  Lines        9777     9920     +143     
==========================================
+ Hits         9217     9354     +137     
- Misses        560      566       +6     

Flag	Coverage Δ
	94.29% <96.00%> (?)

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[ppcad]

Thank you