title: AWS CLI's call for Service Catalog's Launch Product
body: <p>Is there any AWS CLI's call to Service Catalog's Launch Product?
  I looked into "aws create-provisioning-artifact" , but not sure how to define the key-value of the parameters since the documentation only mention KeyName string but not Value string?
  (<a href="http://docs.aws.amazon.com/cli/latest/reference/servicecatalog/create-provisioning-artifact.html" rel="nofollow noreferrer">http://docs.aws.amazon.com/cli/latest/reference/servicecatalog/create-provisioning-artifact.html</a>)</p>
  
  <p>I tried to use the format "KeyName"="Value" in Paramater's Info section (e.g. "Info": {"Subnet ID": "subnet-123456"}) but it throwed an exception:</p>
  
  <blockquote>
    <p>An error occurred (ValidationException) when calling the
    CreateProvisioningArtifact operation: 1 validation error detected:
    Value '{SubnetID=subnet-123456}' at 'parameters.info' failed to
    satisfy constraint: Member must have length less than or equal to 1</p>
  </blockquote>
  
  <p>Could anyone help?
  Thanks in advance!</p>