Fix issue preventing kustomize apps being multi-namespaced

[jessesuen]

No description provided.

[codecov-io]

Codecov Report

Merging #913 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master    #913      +/-   ##
=========================================
+ Coverage   33.49%   33.5%   +<.01%     
=========================================
  Files          49      49              
  Lines        7380    7373       -7     
=========================================
- Hits         2472    2470       -2     
+ Misses       4532    4525       -7     
- Partials      376     378       +2

Impacted Files	Coverage Δ
util/kustomize/kustomize.go	81.81% <ø> (+1.49%)	⬆️
reposerver/repository/repository.go	26.31% <100%> (-0.26%)	⬇️
util/webhook/webhook.go	44.94% <0%> (+3.37%)	⬆️

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[zx8]

This seems to also affect Helm-based applications. I'm seeing the following error:

error: the namespace from the provided object "foo" does not match the
namespace "bar". You must pass '--namespace=foo' to perform this operation.