Update gcr.io/k8s-skaffold/pack to 0.17.0

[briandealwis]

Related: #5360

Description
In #5360 I forgot to update the gcr.io/k8s-skaffold/pack image to 0.17.0.

[codecov]

Codecov Report

Merging #5430 (c9335b0) into master (c1b3f76) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5430      +/-   ##
==========================================
+ Coverage   71.34%   71.39%   +0.04%     
==========================================
  Files         399      397       -2     
  Lines       14508    14540      +32     
==========================================
+ Hits        10351    10381      +30     
- Misses       3385     3388       +3     
+ Partials      772      771       -1     

Impacted Files	Coverage Δ
pkg/skaffold/test/structure/structure.go	86.79% <0.00%> (-13.21%)	⬇️
pkg/skaffold/runner/new.go	67.58% <0.00%> (-1.70%)	⬇️
pkg/skaffold/test/structure/error.go	100.00% <0.00%> (ø)
pkg/skaffold/test/error.go
pkg/skaffold/test/structure/types.go
pkg/skaffold/test/test.go
pkg/skaffold/test/test_factory.go	78.94% <0.00%> (ø)
pkg/skaffold/util/tar.go	56.00% <0.00%> (+5.33%)	⬆️
cmd/skaffold/app/cmd/parse_config.go	78.33% <0.00%> (+6.90%)	⬆️

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