qatdeviceplugin_webhook: Extract only relevant parts for the validation

[ozhuraki]

Since we currently validate only the image name and the tag,
ignore registry, vendor and extract only relevant parts.

Closes #605

[codecov-commenter]

Codecov Report

Merging #648 (54c8e34) into main (0be8b23) will increase coverage by 0.05%.
The diff coverage is 100.00%.

❗ Current head 54c8e34 differs from pull request most recent head 748863a. Consider uploading reports for the commit 748863a to get more accurate results

@@            Coverage Diff             @@
##             main     #648      +/-   ##
==========================================
+ Coverage   59.02%   59.07%   +0.05%     
==========================================
  Files          32       32              
  Lines        2372     2375       +3     
==========================================
+ Hits         1400     1403       +3     
  Misses        890      890              
  Partials       82       82              

Impacted Files	Coverage Δ
cmd/gpu_nfdhook/labeler.go	71.42% <100.00%> (+1.21%)	⬆️
cmd/gpu_plugin/gpu_plugin.go	83.50% <100.00%> (-0.17%)	⬇️

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[mythi]

Suggested change

	parts := strings.SplitN(r.Spec.Image, ":", 2)
	return validatePluginImage(r.Spec.Image, "intel-qat-plugin", qatMinVersion)

we could just return the output from validatePluginImage (see, e.g., dsadeviceplugin_webhook.go)

[ozhuraki]

Thanks for the input. Done. Please take a look.

[mythi]

thanks!