Test resp bodies in TestNoCacheHeaderSetCookie()
Test resp bodies in TestNoCacheHeaderSetCookie()

To ensure that each response is unique.

Although not normal behaviour, there is no guarantee that edge won't send a
request to origin but still return a cached response. So checking the
quantity of requests received may not have been sufficient.

alphagov/cdn-acceptance-tests,alphagov/cdn-acceptance-tests,mikepea/cdn-acceptance-tests,mikepea/cdn-acceptance-tests,mikepea/cdn-acceptance-tests,alphagov/cdn-acceptance-tests,mikepea/cdn-acceptance-tests,alphagov/cdn-acceptance-tests