[drush 10] structure_sync should have an extra.drush.services section in its composer.json

Problem/Motivation

When running $ drush deploy with drush version 10 the following error occurs:

[info] structure_sync should have an extra.drush.services section in its composer.json. See http://docs.drush.org/en/10.x/commands/#specifying-the-services-file.

Steps to reproduce

Proposed resolution

Add the following section to the composer.json file of this module:

  "extra": {
    "drush": {
      "services": {
        "drush.services.yml": "^9 || ^10"
      }
    }
  }

This is also done in other modules like acquia_connector, config_inspector, pathauto and many others.

Remaining tasks

Add the extra section and create composer.json file for this module.

User interface changes

API changes

Data model changes