Regression tests should cope with filename containing spaces
Regression tests should cope with filename containing spaces

I ran into a problem when running regression tests for the
`landlord-immigration-check` smartdown flow - the postcode responses contain
a space.

stwalsh/smart-answers,alphagov/smart-answers,tadast/smart-answers,alphagov/smart-answers,tadast/smart-answers,aledelcueto/smart-answers,stwalsh/smart-answers,aledelcueto/smart-answers,alphagov/smart-answers,aledelcueto/smart-answers,tadast/smart-answers,stwalsh/smart-answers,aledelcueto/smart-answers,stwalsh/smart-answers,alphagov/smart-answers,tadast/smart-answers