[CFAMX-1859] Vendor Item Import - Add support for ReplacedVendorItemCode - HotSchedules JIRA

As an admin I want the Vendor Item Import to support the ReplacedVendorItemCode, so that items can be replaced

Notes

The field (ReplacedVendorItemCode) and logic to implement the field, exist in the Vendor Item Import
Use a directive: {UpdateVendorEntityItem}
* This updates the VendorCode for both the Vendor Item and the Vendor Entity Items

Acceptance Criteria
# Confirm that the Vendor Item Import supports the ReplacedVendorItemCode
# Confirm that the ReplacedVendorItemCode can be used in conjunction with the directive {UpdateVendorEntityItem}
- When the directive is used, the Vendor Entity Items should be updated, as well as the Vendor Item

Confirm when a record for a VEI includes the ReplacedVendorItemCode, the old item (that which is being replaced, and included in the ReplacedVendorItemCode field) the VEI is updated so that the new code is inserted in place of the old ReplacedVendorItemCode
Confirm that comments are inserted into the NewVendorItemComment field of the Vendor Item, that includes the ReplacedVendorItemCode and the new item code.
- "Vendor Code updated from 123456 to 789123 01/25/2019"