Set custom properties and add --enable-group-commit

[yito88]

Description

The custom properties weren't set properly.

Related issues and/or PRs

If this PR addresses or references any issues and/or other PRs, list them here.

Changes made

• Fixed the custom properties setting
• Added --enable-group-commit

Checklist

The following is a best-effort checklist. If any items in this checklist are not applicable to this PR or are dependent on other, unmerged PRs, please still mark the checkboxes after you have read and understood each item.

• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes.
• Any remaining open issues linked to this PR are documented and up-to-date (Jira, GitHub, etc.).
• Tests (unit, integration, etc.) have been added for the changes.
• My changes generate no new warnings.
• Any dependent changes in other PRs have been merged and published.

Additional notes (optional)

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[komamitsu]

LGTM, thank you!

I also confirmed the 2 options --config-test and --enable-group-commit work properly.

[feeblefakie]

LGTM! Thank you!

[brfrn169]

LGTM! Thank you!