shorten allow_query system test

This test takes a long time because the name server needs to be reconfigured fifty-odd times with different combinations of allow-query ACLs. Between each reconfiguration we sleep for a few seconds.

I propose instead setting up ns1 thorugh ns8, each of which would have eight views, listening for different source addresses. If you send a query from 10.53.0.1->10.53.0.1 you get one configuration; 10.53.0.1->10.53.0.2 gets a different one, and so forth up to 10.53.0.8->10.53.0.8. This would give us 64 configurations we can test without having to reconfigure and sleep, and probably reduce the runtime to a few seconds.