Cleanup: use consistent quotes in graphite tool commands

Author: ipspace

netsim/tools/graphite.yml

@@ -8,7 +8,7 @@ docker:
       {sys.docker_net}
       --mount type=bind,source="$(pwd)/graphite/graphite-default.json",target=/htdocs/default/default.json,readonly
       -p { 8080 + defaults.multilab.id if defaults.multilab.id else 8080 }:80
-      --name '{name}_graphite'
+      --name "{name}_graphite"
       netreplica/graphite:0.4.2
   message:
     Open http://{sys.ipaddr}:{ 8080 + defaults.multilab.id if defaults.multilab.id else 8080 }/graphite/ in your browser