Effectively use acceptance tests temp admin user
Effectively use acceptance tests temp admin user

It looks like we were creating a temporary admin user for the test to
avoid exposing our main admin credentials, but we were not using these
credentials.

alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf