Add --plaintext flag for pushing to http registries such as localhost #211
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Hello! I was trying out the policy command with a localhost registry for testing, and discovered that I couldn't push to a localhost registry on
http. The insecure flag skips TLS Verification, but usinghttpsas the Scheme in the docker registry was hard-coded. This PR adds a--plaintextflag which allows this to be configurable.I did a quick comparison with other tools to come up with the name. The lingo of
--plaintextmatches ArgoCD's behaviour. Incranethey just use--insecureto mean "connect to the registry over http".Comparison with other tools
ArgoCD
--insecure= no TLS verify--plaintext= Use HTTP client/serverCrane's
--insecureoption allows for HTTP scheme on registrydoc
how it's used