tests/screentest/testcases.txt: add status
tests/screentest/testcases.txt: add status

Add status lines for tests that don't expect 200.

Change-Id: I4e55a74a3e76f877b32cddd8d5bf597e5c900995
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/385200
Trust: Jonathan Amsterdam <e3d3698b2ccd5955e4adf250d0785062d0f9018b@google.com>
Run-TryBot: Jonathan Amsterdam <e3d3698b2ccd5955e4adf250d0785062d0f9018b@google.com>
Reviewed-by: Jamal Carvalho <e0195770807aa8c82b0b128d9c0423b5ad035172@golang.org>

golang/pkgsite,golang/pkgsite,golang/pkgsite,golang/pkgsite