chore(tests): Tests now fail if propTypes are not respected
chore(tests): Tests now fail if propTypes are not respected

[Finishes #101730210]

Signed-off-by: Caroline Taymor <6220814f63f705589fa0394c3218bcae0c084690@pivotal.io>

npm/pivotal-ui,npm/pivotal-ui,sjolicoeur/pivotal-ui,npm/pivotal-ui,CanopyCloud/pivotal-ui,sjolicoeur/pivotal-ui,CanopyCloud/pivotal-ui,pivotal-cf/pivotal-ui,sjolicoeur/pivotal-ui,pivotal-cf/pivotal-ui,sjolicoeur/pivotal-ui,CanopyCloud/pivotal-ui,pivotal-cf/pivotal-ui