Creating a client with http://Administrator:password@localhost:8091 causing authentication to fail

If you connect with http://Administrator:password@localhost:8091 there is an issue because when you specify the username and password later (when calling OpenBucket for example) the arguments passed into this function are overwritten by the ones in the url that is passed in to create the original connection.

See https://golang.org/src/net/http/client.go line 214 for the place where this gets overridden.