Set the run_dir /opt/datadog-agent/run group writable

[raymondchen625]

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What does this PR do?

Set the run_dir /opt/datadog-agent/run group writable

Motivation

When I run the datadog-agent container as user dd-agent (UID:100), I found errors like this due to permission issue on /opt/datadog-agent/run:

2024-02-08 20:24:35.130,2024-02-08 20:24:35 UTC | CORE | ERROR | (pkg/util/installinfo/install_info.go:134 in logVersionHistoryToFile) | Cannot write json file: /opt/datadog-agent/run/version-history.json open /opt/datadog-agent/run/version-history.json: permission denied,datadog-ecs/datadog-agent/bd1ce4ab59a04cfe88154bcd500df82b,123456789012:my-cluster-datadog
2024-02-08 20:24:34.346,2024-02-08 20:24:34 UTC | CORE | ERROR | (cmd/agent/subcommands/run/command.go:432 in startAgent) | Failed to initialize config management service: open /opt/datadog-agent/run/remote-config.db: permission denied,datadog-ecs/datadog-agent/bd1ce4ab59a04cfe88154bcd500df82b,123456789012:my-cluster-datadog
2024-02-08 20:24:00.311,2024-02-08 20:24:00 UTC | CORE | ERROR | (pkg/util/installinfo/install_info.go:134 in logVersionHistoryToFile) | Cannot write json file: /opt/datadog-agent/run/version-history.json open /opt/datadog-agent/run/version-history.json: permission denied,datadog-ecs/datadog-agent/393ec259321e489d901e44e544918bfb,123456789012:my-cluster-datadog
2024-02-08 20:23:59.906,2024-02-08 20:23:59 UTC | CORE | ERROR | (cmd/agent/subcommands/run/command.go:432 in startAgent) | Failed to initialize config management service: open /opt/datadog-agent/run/remote-config.db: permission denied,datadog-ecs/datadog-agent/393ec259321e489d901e44e544918bfb,123456789012:my-cluster-datadog
2024-02-08 20:23:38.318,2024-02-08 20:23:38 UTC | CORE | ERROR | (pkg/util/installinfo/install_info.go:134 in logVersionHistoryToFile) | Cannot write json file: /opt/datadog-agent/run/version-history.json open /opt/datadog-agent/run/version-history.json: permission denied,datadog-ecs/datadog-agent/2729bed525a743c2b74b6dba8446d0f9,123456789012:my-cluster-datadog

Setting it to group writable in the Dockerfile.

Describe how to test/QA your changes

Build a new docker image and configure to run it as regular user dd-agent (UID:100).

Reviewer's Checklist

• [ ] If known, an appropriate milestone has been selected; otherwise the Triage milestone is set.
• [ ] Use the major_change label if your change either has a major impact on the code base, is impacting multiple teams or is changing important well-established internals of the Agent. This label will be use during QA to make sure each team pay extra attention to the changed behavior. For any customer facing change use a releasenote.
• [ ] A release note has been added or the changelog/no-changelog label has been applied.
• [ ] Changed code has automated tests for its functionality.
• [ ] Adequate QA/testing plan information is provided. Except if the qa/skip-qa label, with required either qa/done or qa/no-code-change labels, are applied.
• [ ] At least one team/.. label has been applied, indicating the team(s) that should QA this change.
• [ ] If applicable, docs team has been notified or an issue has been opened on the documentation repo.
• [ ] If applicable, the need-change/operator and need-change/helm labels have been applied.
• [ ] If applicable, the k8s/<min-version> label, indicating the lowest Kubernetes version compatible with this feature.
• [ ] If applicable, the config template has been updated.

[bits-bot]

All committers have signed the CLA.

[raymondchen625]

Can I get another review?

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 45.41%. Comparing base (680baa2) to head (d2730d5).

:exclamation: Current head d2730d5 differs from pull request most recent head 6e61679

Please upload reports for the commit 6e61679 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #22720      +/-   ##
==========================================
+ Coverage   36.93%   45.41%   +8.47%     
==========================================
  Files        3069     2108     -961     
  Lines      342046   251334   -90712     
==========================================
- Hits       126338   114141   -12197     
+ Misses     205876   128011   -77865     
+ Partials     9832     9182     -650     

Flag	Coverage Δ
centos_x86_64	?
ubuntu_x86_64	45.41% <ø> (+8.48%)	:arrow_up:

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