[gitlab] Remove the forwarded tag from filestream input by default

[brijesh-elastic]

Proposed commit message

gitlab: remove the `forwarded` tag from filestream input by default

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

How to test this PR locally

• Clone integrations repo.
• Install elastic package locally.
• Start elastic stack using elastic-package.
• Move to integrations/packages/gitlab directory.
• Run the following command to run tests.

elastic-package test

Related issues

• Closes [gitlab]: Do not include the "forwarded" tag in the defaults #13564

[elasticmachine]

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

[elastic-vault-github-plugin-prod]

🚀 Benchmarks report

To see the full report comment with /test benchmark fullreport

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 6b1812d

cc @brijesh-elastic

[ShourieG]

@brijesh-elastic, before we go ahead with this, we need to update the issue by saying, having forwarded in defaults is actually the consistent behaviour.

[ShourieG]

LGTM

[elastic-vault-github-plugin-prod]

Package gitlab - 2.4.0 containing this change is available at https://epr.elastic.co/package/gitlab/2.4.0/