vpp verify followup (#30389)

> Fixes #29851
> Fixes #29902
> Mainly followups from https://github.com/fleetdm/fleet/pull/30295,
plus improved integration testing

# Checklist for submitter

If some of the following don't apply, delete the relevant line.

<!-- Note that API documentation changes are now addressed by the
product design team. -->

- [x] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements)
- [x] Added/updated automated tests
- [x] Manual QA for all new/changed functionality

cmd/fleet/cron.go

@@ -706,7 +706,7 @@ func newWorkerIntegrationsSchedule(
 		Commander:             commander,
 		BootstrapPackageStore: bootstrapPackageStore,
 	}
-	vppVerify := &worker.VPPVerification{
+	vppVerify := &worker.AppleSoftware{
 		Datastore: ds,
 		Log:       logger,
 		Commander: commander,