Start test dht listeners in series

Can not explain why this happens, but the fix seems to work. Change does
not seem to affect what the test is actually doing anyway ( the wait makes
the entire block synchrronous )

test/sharness/t0131-multinode-client-routing.sh

@@ -46,9 +46,11 @@ test_expect_success "set up testbed" '
   iptb testbed create -type localipfs -count $NNODES -force -init
 '
 
+# for some reason starting 8/9 together gets stuck on a wait...
 test_expect_success "start up nodes" '
   iptb start -wait [0-7] &&
-  iptb start -wait [8-9] -- --routing=dhtclient
+  iptb start -wait 8 -- --routing=dhtclient &&
+  iptb start -wait 9 -- --routing=dhtclient
 '
 
 test_expect_success "connect up nodes" '