[104233] Use a valid default endpoint for cf redirect_uri
[104233] Use a valid default endpoint for cf redirect_uri

Commit b4e288cb3b introduced a fix for open redirects but requires a valid starting uri

ActiveState/aok,hpcloud/aok,ActiveState/aok,ActiveState/aok,ActiveState/aok,hpcloud/aok,hpcloud/aok,hpcloud/aok