[6.0] 2d133bc7a work around older libedit which fails to append rl_completion_append_character

[Dridi Boukelmoune]

commit 2d133bc7ab472881640623d8cc8fee6c43f98cb6
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Thu Nov 15 16:25:04 2018 +0100

    work around older libedit which fails to append rl_completion_append_character
    
    I failed to find any issue in varnish and failed to find a
    workaround for the code, so change the test to add an additional
    space after the tab-completion.
    
    If anyone has a better solution, please go head. Otherwise I feel
    this is not worth any more time.
    
    The test change, though not being ideal, should not cause any
    harm at least.
    
    Closes #2833

diff --git a/bin/varnishtest/tests/u00011.vtc b/bin/varnishtest/tests/u00011.vtc
index d6e8098dd..b53a9ba7b 100644
--- a/bin/varnishtest/tests/u00011.vtc
+++ b/bin/varnishtest/tests/u00011.vtc
@@ -26,7 +26,7 @@ process p1 -write "vcl.li\t\r"
 
 process p1 -expect-text 0 1 "active      auto/warm"
 
-process p1 -write "vcl.s\t\th\tvcl1\r"
+process p1 -write "vcl.s\t\th\t vcl1\r"
 
 process p1 -expect-text 0 1 "backend s1"