[Backport 2.1] Issue 14351: Product import doesn't change Enable Qty Increments field

[simpleadm]

Backported pull request #14352

Description

\Magento\CatalogImportExport\Model\Import\Product::_setStockUseConfigFieldsValues method rely on Use Config Settings property name will be with use_config_ prefix, but for enable_qty_increments filed it is named as use_config_enable_qty_inc.

Fixed Issues (if relevant)

1. Product import doesn't change Enable Qty Increments field #14351: Product import doesn't change Enable Qty Increments field

Manual testing scenarios

As explained in #14352

[simpleadm]

Hi @magento-engcom-team ,
The original pull request was accepted and merged to the 2.3-develop branch.
Can you please check and approve current one?

Thanks!

[magento-engcom-team]

Hi @simpleadm. Thank you for your contribution.
We will aim to release these changes as part of 2.1.15.
Please check the release notes for final confirmation.