fix(layer): handle terraform errors in runner

[corrieriluca]

Closes #148

[codecov-commenter]

Codecov Report

Merging #149 (7bd006f) into main (6f45c0b) will increase coverage by 0.16%.
The diff coverage is 68.00%.

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@@            Coverage Diff             @@
##             main     #149      +/-   ##
==========================================
+ Coverage   69.67%   69.84%   +0.16%     
==========================================
  Files          23       23              
  Lines        1560     1572      +12     
==========================================
+ Hits         1087     1098      +11     
- Misses        411      412       +1     
  Partials       62       62              

Files Changed	Coverage Δ
...nal/controllers/terraformpullrequest/controller.go	34.92% <0.00%> (ø)
...nternal/controllers/terraformpullrequest/states.go	56.97% <0.00%> (ø)
internal/webhook/github/provider.go	69.64% <0.00%> (ø)
internal/webhook/gitlab/provider.go	71.66% <0.00%> (ø)
internal/burrito/config/config.go	61.76% <20.00%> (-0.93%)	⬇️
internal/controllers/terraformlayer/conditions.go	65.10% <100.00%> (+1.32%)	⬆️
internal/controllers/terraformlayer/pod.go	100.00% <100.00%> (ø)

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[spoukke]

LGTM :)