[6.0] 3cbba137f Use 'process' when terminal/curses is involved

[Dridi Boukelmoune]

commit 3cbba137fdbe6f612742b3868c4fcfea39e600c1
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon May 28 16:20:01 2018 +0000

    Use 'process' when terminal/curses is involved

diff --git a/bin/varnishtest/tests/u00004.vtc b/bin/varnishtest/tests/u00004.vtc
index 71ca1f601..5435f9865 100644
--- a/bin/varnishtest/tests/u00004.vtc
+++ b/bin/varnishtest/tests/u00004.vtc
@@ -13,7 +13,9 @@ client c1 {
 } -run
 
 shell -expect "fetch" "varnishtop -n ${v1_name} -1"
-shell -expect "fetch" "varnishtop -n ${v1_name} -d"
+
+process p1 "varnishtop -n ${v1_name} -d" -run -screen_dump
+process p1 -expect-text 0 0 fetch
 
 # without -f
 shell -match "1\\.00 RespHeader Date: [^\\n]+\\n" {