[entityanalytics_ad] Remove members from group information by default

[chrisberkhout]

Proposed commit message

[entityanalytics_ad] Remove members from group information by default

The `entityanalytics_ad.groups.member` field can be very large if the
user is a member of a large group.

We want information about groups a user belongs, but we don't need a
list of every other member of the group, so this field is no longer
populated by default.

Alongside the existing advanced option to request specific group
attributes, there is a new advanced option (off by default) to preserve
the member list.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

Related issues

• Closes [entityanalytics_ad]: Investigate efficient handling of group membership data #12520

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Pinging @elastic/security-service-integrations (Team:Security-Service Integrations)

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💚 Build Succeeded

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• Commit: 2203a62

cc @chrisberkhout

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Quality Gate failed

Failed conditions
57.1% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube

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Package entityanalytics_ad - 0.14.1 containing this change is available at https://epr.elastic.co/package/entityanalytics_ad/0.14.1/