Misc improvements

[dgageot]

No description provided.

[codecov-io]

Codecov Report

Merging #911 into master will increase coverage by 2.56%.
The diff coverage is 54.54%.

@@            Coverage Diff             @@
##           master     #911      +/-   ##
==========================================
+ Coverage   39.52%   42.09%   +2.56%     
==========================================
  Files          61       61              
  Lines        2616     2497     -119     
==========================================
+ Hits         1034     1051      +17     
+ Misses       1469     1332     -137     
- Partials      113      114       +1

Impacted Files	Coverage Δ
pkg/skaffold/kubernetes/wait.go	29.41% <ø> (+18.17%)	⬆️
pkg/skaffold/kubernetes/colorpicker.go	100% <ø> (ø)	⬆️
pkg/skaffold/util/util.go	49.29% <ø> (+5.54%)	⬆️
pkg/skaffold/build/local/bazel.go	0% <0%> (ø)	⬆️
pkg/skaffold/deploy/kubectl/cli.go	0% <0%> (ø)	⬆️
pkg/skaffold/build/local/docker.go	21.05% <0%> (ø)	⬆️
pkg/skaffold/deploy/kustomize.go	0% <0%> (ø)	⬆️
pkg/skaffold/runner/runner.go	57.31% <100%> (ø)	⬆️
pkg/skaffold/runner/changes.go	100% <100%> (ø)	⬆️
pkg/skaffold/deploy/kubectl.go	50.61% <62.5%> (ø)	⬆️
... and 2 more

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[dgageot]

ping @balopat, this is a collection of small things that should be easy to review.
I can break the PR if you prefer.

[balopat]

LGTM, thank you!