Sync secrets (SSL certificates) on events

Remove scheduled check for missing secrets.

internal/task/queue.go

@@ -42,9 +42,9 @@ type Queue struct {
 	sync func(interface{}) error
 	// workerDone is closed when the worker exits
 	workerDone chan bool
-
+	// fn makes a key for an API object
 	fn func(obj interface{}) (interface{}, error)
-
+	// lastSync is the Unix epoch time of the last execution of 'sync'
 	lastSync int64
 }