Update to elastic/beats@bb7f0e7c0327 (7.x)

[axw]

Motivation/summary

Brings in elastic/beats#21334

Checklist

• I have signed the Contributor License Agreement.
  - [ ] I have updated CHANGELOG.asciidoc

I have considered changes for:
- [ ] documentation
- [ ] logging (add log lines, choose appropriate log selector, etc.)
- [ ] metrics and monitoring (create issue for Kibana team to add metrics to visualizations, e.g. Kibana#44001)

• automated tests (add tests for the code changes, all unit tests pass locally)
  - [ ] telemetry
  - [ ] Elasticsearch Service (https://cloud.elastic.co)
  - [ ] Elastic Cloud Enterprise (https://www.elastic.co/products/ece)
  - [ ] Elastic Cloud on Kubernetes (https://www.elastic.co/elastic-cloud-kubernetes)

How to test these changes

Run apm-server on Linux with monitoring enabled, observe cgroup metrics are published.

Related issues

Part of ##4070

[apmmachine]

💚 Build Succeeded

Expand to view the summary

Build stats

• Build Cause: [axw commented: jenkins run the tests please]

• Start Time: 2020-10-02T01:22:49.120+0000

• Duration: 32 min 31 sec

Test stats 🧪

Test	Results
Failed	0
Passed	3813
Skipped	142
Total	3955

Steps errors

Expand to view the steps failures

• Name: Compress

  • Description: tar --exclude=coverage-files.tgz -czf coverage-files.tgz coverage

  • Duration: 0 min 0 sec

  • Start Time: 2020-10-02T01:41:43.141+0000

  • log

• Name: Compress

  • Description: tar --exclude=system-tests-linux-files.tgz -czf system-tests-linux-files.tgz system-tests

  • Duration: 0 min 0 sec

  • Start Time: 2020-10-02T01:54:18.361+0000

  • log

[axw]

jenkins run the tests please

[jalvz]

guess should rerun tests

[axw]

jenkins run the tests please