Dependencies: add registry chart

Added registry chart & documentation, based on
github.com/docker/distribution

- prefix is used so that improper tags are not picked up
- version is set without 'v'
- doc/charts/registry/index.md is blanket updated as regex doesn't work

Signed-off-by: Jason Plum <[email protected]>
10 jobs for 1220-dependency-registry-chart in 43 minutes and 6 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Prepare
passed #182619177
check_docs_internal_links

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danger-review

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danger-review

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  Review
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review

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manual
stop_review

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  Specs
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review_specs

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  Qa
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debug_review
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qa

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passed #182619181
review_helm_test

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  Package
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lint_package

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