Don't lose test configuration when running skaffold fix

[nkubala]

Fixes #1246

[codecov-io]

Codecov Report

Merging #1251 into master will increase coverage by 0.14%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1251      +/-   ##
==========================================
+ Coverage   42.28%   42.42%   +0.14%     
==========================================
  Files          96       96              
  Lines        4247     4247              
==========================================
+ Hits         1796     1802       +6     
+ Misses       2278     2269       -9     
- Partials      173      176       +3

Impacted Files	Coverage Δ
pkg/skaffold/runner/runner.go	48.8% <100%> (ø)	⬆️
pkg/skaffold/schema/profiles.go	92.53% <100%> (ø)	⬆️
cmd/skaffold/app/cmd/fix.go	19.35% <0%> (+19.35%)	⬆️

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[priyawadhwa]

LGTM! could you also add this to the skaffold fix integration test?

[dgageot]

LGTM. It would be even better with a few unit tests