Backport of copy the license file into artifacts into release/1.1.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #479 to be assessed for backporting due to the inclusion of the label backport/1.1.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
will see the cherry-picked commits up to, not including, the commit where
the merge conflict occurred.

The person who merged in the original PR is:
@wangxinyi7
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: POST https://api.github.com/repos/hashicorp/consul-dataplane/merges: 409 Merge conflict []

The below text is copied from the body of the original PR.

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DoD

• Add license file into ZIP
• Add license file into linux config_dir
• Add license file into docker image
• Add license label into docker image

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Overview of commits

• d91b380 - a5a9f7d - 6c36b24 - f4fe770

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