Fix unjoined instance scanning

[eytan-avisror]

Fixes #16

[vgunapati]

LGTM 🚀

[codecov]

Codecov Report

Merging #17 into master will increase coverage by 0.1%.
The diff coverage is 75%.

@@            Coverage Diff            @@
##           master      #17     +/-   ##
=========================================
+ Coverage   53.28%   53.38%   +0.1%     
=========================================
  Files           4        4             
  Lines         822      826      +4     
=========================================
+ Hits          438      441      +3     
- Misses        337      338      +1     
  Partials       47       47

Impacted Files	Coverage Δ
pkg/reaper/nodereaper/nodereaper.go	46.79% <75%> (+0.25%)	⬆️

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