create directory share for dnsmasw leases

nixos/machines/default.nix

@@ -75,6 +75,14 @@
           staticIPv6 = config.lab.networking.dmz.ipv6.services;
         };
       };
+
+      microvm.shares = [{
+        source = "/data/vm_shares/${config.networking.hostName}/dnsmasq";
+        mountPoint = "/var/lib/dnsmasq";
+        tag = "dnsmasq";
+        proto = "virtiofs";
+        socket = "dnsmasq.sock";
+      }];
     };
   };