11552: Admin orders account information showing guest for customer name.

[nmalevanec]

Description

Fix for : Admin orders account information showing guest for customer name.

Fixed Issues (if relevant)

1. Admin orders account information showing guest for customer name #11552: Admin orders account information showing guest for customer name.

Manual testing scenarios

1. Register customer.
2. Create simple product.
3. Create guest cart with POST rest/V1/guest-carts.
4. Add simple product to cart with POST rest/V1/guest-carts/{cart_id_form_previous_step}/items.
   body ex:

{
  "cartItem": {
    "sku": "{your_simple_product_sku}",
    "qty": 1,
    "name": "{your_simple_product_name}",
    "product_type": "simple",
    "quote_id": "{cart_id_form_previous_step}"
  }
}

5. Assign cart to registered customer with PUT rest/V1/carts/mine.
   Set only customer id field for customer information:

{
  "quote": {
    "id": "{quote_id_from_previous_step_response_body}",
    "is_active": true,
    "customer": {
      "id": "{registered_customer_id_from_first_step}",
    }
  }
}

6. Login as customer from 1-st step(customer should have cart with 1 item. If not, try to remove all previous quotes from magento db, table "quote").
7. Complete checkout process.
8. Navigate to admin Sales > Orders.
9. Check newly created order, section "Account Information". "Customer Name", "Email", "Customer Group" should be presented and has correct values(same as registered customer from step1).

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)