[7.17](backport #32954) ironbank: support for heartbeat

[mergify]

This is an automatic backport of pull request #32954 done by Mergify.

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[elasticmachine]

💔 Build Failed

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Build stats

• Start Time: 2022-09-01T14:43:47.079+0000

• Duration: 215 min 5 sec

Test stats 🧪

Test	Results
Failed	0
Passed	22149
Skipped	1563
Total	23712

Steps errors

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Building Beats » Beats Packaging » PR-32958

• Took 119 min 46 sec . View more details here
• Description: null

💚 Flaky test report

Tests succeeded.

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[v1v]

Test

Artifacts uploaded to a Google Bucket

➜  gsutil cp gs://beats-ci-artifacts/beats/pull-requests/pr-32958/heartbeat/heartbeat-ironbank-7.17.7-SNAPSHOT-docker-build-context.tar.gz .
Copying gs://beats-ci-artifacts/beats/pull-requests/pr-32958/heartbeat/heartbeat-ironbank-7.17.7-SNAPSHOT-docker-build-context.tar.gz...
- [1 files][ 25.7 KiB/ 25.7 KiB]                                                
Operation completed over 1 objects/25.7 KiB.                                     
➜  tar -xvf heartbeat-ironbank-7.17.7-SNAPSHOT-docker-build-context.tar.gz 
x Dockerfile
x LICENSE
x README.md
x hardening_manifest.yaml
x signatures
x signatures/RPM-GPG-KEY-CentOS-Official
x signatures/RPM-GPG-KEY-rockyofficial
x signatures/linux_signing_key.pub
➜  grep 7.17.7 *
Dockerfile:ARG ELASTIC_STACK=7.17.7
README.md:[here](https://www.elastic.co/guide/en/beats/libbeat/current/release-notes-7.17.7.html).
hardening_manifest.yaml:  - "7.17.7"
hardening_manifest.yaml:  ELASTIC_STACK: "7.17.7"
hardening_manifest.yaml:  org.opencontainers.image.version: "7.17.7"
hardening_manifest.yaml:  - filename: "heartbeat-7.17.7-linux-x86_64.tar.gz"
hardening_manifest.yaml:    url: "<artifact_path>/heartbeat-7.17.7-linux-x86_64.tar.gz"