pkg/controller: set runFunc to when controller is manually triggered

`runFunc` should be set to true when the controller is manually
triggered otherwise the controller might never be executed in the case
where its run interval is zero.

Fixes: c61d02f ("controller: allow to manually trigger it")
Signed-off-by: André Martins <andre@cilium.io>

pkg/controller/controller.go

@@ -282,6 +282,7 @@ func (c *Controller) runController() {
 
 		case <-runTimer.After(interval):
 		case <-c.trigger:
+			runFunc = true
 		}
 
 	}