Have kind.local test use --platform=all

[mattmoor]

Fix --platform=all with kind.local

[codecov-commenter]

Codecov Report

Merging #208 into master will decrease coverage by 0.64%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #208      +/-   ##
==========================================
- Coverage   37.79%   37.15%   -0.65%     
==========================================
  Files          33       33              
  Lines        1381     1405      +24     
==========================================
  Hits          522      522              
- Misses        769      793      +24     
  Partials       90       90              

Impacted Files	Coverage Δ
pkg/publish/kind.go	0.00% <0.00%> (ø)

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[dprotaso]

/lgtm