[6.3] 864611901 Stabilize r2964

[Dridi Boukelmoune]

commit 864611901e9d9db61cb3a07b595cda38935ffdcb
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Fri Jan 3 09:53:05 2020 +0100

    Stabilize r2964
    
    The fetch may be interrupted before s1 has time to buffer the complete
    response.
    
    Refs #3236

diff --git a/bin/varnishtest/tests/r02964.vtc b/bin/varnishtest/tests/r02964.vtc
index 12cc4d603..427b1c3cf 100644
--- a/bin/varnishtest/tests/r02964.vtc
+++ b/bin/varnishtest/tests/r02964.vtc
@@ -1,6 +1,7 @@
 varnishtest "Cancel private busy obj from vcl_deliver"
 
 server s1 {
+	non_fatal
 	rxreq
 	expect req.url == "/hfm"
 	txresp -hdr "HFM: True" -bodylen 65530