Provide a mechanism to verify functionality of an Operator

User Story
As an application developer I would like to verify that an Operator produces functionally correct output given a golden input and a similarity metric measure so that I can assess the correctness of the Operator

Background
It is important that there is a standardized way to verify the functional correctness of an Operator before an application is published to an orchestration environment.

Success Criteria
Operator Provides the following outputs at a minimum:

• there is a mechanism to provide gold input dataset(s) to the operator
• there is a mechanism to provide gold output dataset(s) to the operator
• there is a mechanism to provide a similarity metric measure
• during execution in verification mode, operator's inputs and outputs are compared using the similarity metric measure and the result of comparison is published