How to Setup AWS EC2 to Get Public Images

Issue

• I need to setup the filter for getting public EC2 images for the Amazon provider
• The default advanced configurations look like this:

:ec2:
    :get_private_images: true
    :get_shared_images: true
    :get_public_images: false
    :public_images_filters:
    - :name: image-type
      :values:
      - machine