We will be using PersonaTestUser and a REST API Token for these tests @bjdixon  , So till we are ready with some tests , we will be modifying the credentials.yaml like https://github.com/mozilla/oneanddone-tests/pull/2/files#diff-404878453407117a54b09e327876de71L32

So it will be good not to add ```credentials.yaml``` to ```.gitignore```