Adding product configurations uses sku based name

[PascalBrouwers]

Preconditions

1. Magento 2.x

Steps to reproduce

1. Create a configurable product with some configurations (simple products)
2. Use name 'NAME'
3. Use sku 'SKU'
4. Create configurations and Generate products

Expected result

1. Name of the simple products should be based on the parent product

Actual result

1. Name is based on the sku of the parent product
   

[PascalBrouwers]

If necessary I can also create a PR for the 2.1-develop branch

[magento-team]

Internal ticket to track issue progress: MAGETWO-69297