[8.3](backport #32251) automate the ironbank docker context generation

[mergify]

This is an automatic backport of pull request #32251 done by Mergify.
Cherry-pick of e41dc18 has failed:

On branch mergify/bp/8.3/pr-32251
Your branch is up to date with 'origin/8.3'.

You are currently cherry-picking commit e41dc18a54.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   .ci/packaging.groovy
	modified:   auditbeat/magefile.go
	modified:   dev-tools/mage/common.go
	modified:   dev-tools/mage/copy.go
	modified:   dev-tools/mage/pkg.go
	modified:   dev-tools/mage/settings.go
	modified:   dev-tools/make/mage.mk
	new file:   dev-tools/packaging/files/ironbank/LICENSE
	new file:   dev-tools/packaging/files/ironbank/auditbeat/config/auditbeat.yml
	new file:   dev-tools/packaging/templates/ironbank/auditbeat/Dockerfile
	new file:   dev-tools/packaging/templates/ironbank/auditbeat/README.md
	new file:   dev-tools/packaging/templates/ironbank/auditbeat/hardening_manifest.yaml
	new file:   dev-tools/packaging/templates/ironbank/filebeat/Dockerfile
	new file:   dev-tools/packaging/templates/ironbank/filebeat/README.md
	new file:   dev-tools/packaging/templates/ironbank/filebeat/hardening_manifest.yaml
	new file:   dev-tools/packaging/templates/ironbank/metricbeat/Dockerfile
	new file:   dev-tools/packaging/templates/ironbank/metricbeat/README.md
	new file:   dev-tools/packaging/templates/ironbank/metricbeat/hardening_manifest.yaml
	new file:   dev-tools/packaging/templates/ironbank/packetbeat/Dockerfile
	new file:   dev-tools/packaging/templates/ironbank/packetbeat/README.md
	new file:   dev-tools/packaging/templates/ironbank/packetbeat/hardening_manifest.yaml
	modified:   filebeat/magefile.go
	modified:   heartbeat/magefile.go
	modified:   metricbeat/magefile.go
	modified:   packetbeat/magefile.go
	modified:   winlogbeat/magefile.go
	modified:   x-pack/auditbeat/magefile.go
	modified:   x-pack/dockerlogbeat/magefile.go
	modified:   x-pack/filebeat/magefile.go
	modified:   x-pack/functionbeat/magefile.go
	modified:   x-pack/heartbeat/magefile.go
	modified:   x-pack/metricbeat/magefile.go
	modified:   x-pack/osquerybeat/magefile.go
	modified:   x-pack/packetbeat/magefile.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   x-pack/winlogbeat/magefile.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

---

Mergify commands and options

More conditions and actions can be found in the documentation.

You can also trigger Mergify actions by commenting on this pull request:

• @Mergifyio refresh will re-evaluate the rules
• @Mergifyio rebase will rebase this PR on its base branch
• @Mergifyio update will merge the base branch into this PR
• @Mergifyio backport <destination> will backport this PR on <destination> branch

Additionally, on Mergify dashboard you can:

• look at your merge queues
• generate the Mergify configuration with the config editor.

Finally, you can contact us on https://mergify.com

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2022-07-21T15:59:24.950+0000

• Duration: 101 min 10 sec

Test stats 🧪

Test	Results
Failed	0
Passed	1548
Skipped	41
Total	1589

💚 Flaky test report

Tests succeeded.

🤖 GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

• /package : Generate the packages and run the E2E tests.

• /beats-tester : Run the installation tests with beats-tester.

• run elasticsearch-ci/docs : Re-trigger the docs validation. (use unformatted text in the comment!)

[v1v]

/test

[v1v]

/test

[v1v]

### Test

Copying gs://beats-ci-artifacts/beats/pull-requests/pr-32420/packetbeat/packetbeat-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz...
/ [1 files][  8.9 KiB/  8.9 KiB]                                                
Operation completed over 1 objects/8.9 KiB.                                      
Copying gs://beats-ci-artifacts/beats/pull-requests/pr-32420/packetbeat/packetbeat-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz.sha512...
/ [1 files][  192.0 B/  192.0 B]                                                
Operation completed over 1 objects/192.0 B.                                      
packetbeat-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz: OK
x Dockerfile
x LICENSE
x README.md
x hardening_manifest.yaml
Dockerfile:ARG ELASTIC_STACK=8.3.3
README.md:[here](https://www.elastic.co/guide/en/beats/libbeat/current/release-notes-8.3.3.html).
file.sh:gsutil cp gs://beats-ci-artifacts/beats/pull-requests/pr-32420/$1/$1-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz .
file.sh:gsutil cp gs://beats-ci-artifacts/beats/pull-requests/pr-32420/$1/$1-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz.sha512 .
file.sh:sha512sum --check $1-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz.sha512
file.sh:tar xvf $1-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz
file.sh:grep 8.3.3 *
hardening_manifest.yaml:  - "8.3.3"
hardening_manifest.yaml:  ELASTIC_STACK: "8.3.3"
hardening_manifest.yaml:  org.opencontainers.image.version: "8.3.3"
hardening_manifest.yaml:  - filename: "packetbeat-8.3.3-linux-x86_64.tar.gz"
hardening_manifest.yaml:    url: "<artifact_path>/packetbeat-8.3.3-linux-x86_64.tar.gz"
packetbeat-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz.sha512:014373df2bfc1ed33b8e40a15731b571895001038420d78c4a245b03cb1acf72eb27d972ed585ee6ae091ae94e818ebbbd4d52fb7a895bf901629a07988f9dd3  packetbeat-ironbank-8.3.3-SNAPSHOT-docker-build-context.tar.gz