As Amazon continues to try to shrink the gap between its own share of consumers’ grocery spending and Walmart’s, the eCommerce giant is retooling its mass-market brick-and-mortar offerings and looking to provide one-stop pickup options.On Amazon’s latest earnings call, CEO Andy Jassy noted that the company has already captures a significant share of consumers’ nonperishable grocery spending, with shoppers leveraging the eCommerce marketplace for items such as “consumables and canned goods and pet food and h ...