Add a name to the Composite\Fieldset\Options block directive

[navarr]

Add the name "product.composite.fieldset.options" to Composite\Fieldset\Options block so that third party custom options can add their own values without re-declaring the product.composite.fieldset directive.

Description

The block modified in this PR needs to have a name so that it can be referenced from third party modules wishing to create their own custom options.

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[navarr]

This was modified to "Response Needed" but nothing was asked here - does that mean an internal response is necessary (e.g. still out of my hands?)

[ishakhsuvarov]

@navarr Looks like it was a mistake on my side. Thank you for bumping this. We are proceeding with this PR.

[magento-team]

@navarr thank you for your contribution. Your Pull Request has been successfully merged