[master] 691d5ac9b finally get r01490.vtc right

[Nils Goroll]

commit 691d5ac9b3aaa4d22b98cc1ce44b8daa685f64e9
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Tue Apr 23 17:26:54 2019 +0200

    finally get r01490.vtc right
    
    (i hope)
    
    Trouble here is that in pool_herder(), we access pp->dry unprotected, so
    we might see an old value, thus we might breed more than wthread_min
    even if the dry condition does not exist any more.
    
    So for the vtc, we need to wait until wthread_timeout has passed and the
    surplus thread has been kissed to death.
    
    Notice that this does not change with #2942 because there the same
    unprotected access happens to lqueue.

diff --git a/bin/varnishtest/tests/r01490.vtc b/bin/varnishtest/tests/r01490.vtc
index 88c2550aa..fa7c8af67 100644
--- a/bin/varnishtest/tests/r01490.vtc
+++ b/bin/varnishtest/tests/r01490.vtc
@@ -13,7 +13,8 @@ varnish v1 \
 	-vcl+backend {}
 varnish v1 -start
 
-delay 2
+# we might have over-bred
+delay 11
 
 varnish v1 -expect threads == 2