record whether an agent's config sets privateUsers in its closure record

hive-c0re/src/attic/probe.rs

@@ -317,6 +317,7 @@ mod tests {
             system: "x86_64-linux".to_owned(),
             built_unix: 1,
             cached: true,
+            private_users: false,
         }
     }
 

hive-c0re/src/job_queue/exec/tests.rs

@@ -285,6 +285,7 @@ fn closure(meta_rev: &str, cached: bool) -> AgentClosure {
         system: "x86_64-linux".to_owned(),
         built_unix: 1,
         cached,
+        private_users: false,
     }
 }