Http -> HTTP since the test helper is fixed not to generate long names (#9708)
Http -> HTTP since the test helper is fixed not to generate long names (#9708)

we have a list of things to check against and HTTP is in it — so the
names will not be outrageously long

Change-Id: I6603dbd226c1d0139898a39e339f98faf19154d1
knative/serving,knative/serving