sudo: declare the operator account's passwordless escalation as a module

Three modules' tools act through `sudo -n` and nothing declared that the
account may; each machine said so in a hand-set line in /etc/sudoers. The
module owns the package and /etc/sudoers.d/10-mesh-operator (0440), checked
by visudo in its manifest test, and serves sudo_rules, sudo_check and
sudo_drop_ins from a Go bundle. lab stops declaring the sudo package, which
would collide with this module on the node that runs both (hq ADR 0207,
to-be 42 Phase 1).

modules/lab/module.json

@@ -50,11 +50,6 @@
       "type": "package",
       "package": "iproute2"
     },
-    {
-      "id": "sudo",
-      "type": "package",
-      "package": "sudo"
-    },
     {
       "id": "npm",
       "type": "package",