Need the ability to update a product in the catalog. 

**As a** catalog admin
 **I need** to be able to update a product in the catalog  
 **So that** I can make changes to product specs
   
 ### Details and Assumptions
 * [document what you know]
   
 ### Acceptance Criteria  
   
 ```gherkin
 Given I upload changed data for a product in the catalog
 When I retrieve the product info from the catalog
 Then I see the new data
 ```
