fix: fscache and virtio fail to start

State machine is turned on arriving 'RUNNING' via 'READY', instead from
'INIT' to 'RUNNING' directly. The virtio and fscache miss the trigger
from 'INIT' to 'READY', still trying to transfer from 'INIT' to
'RUNNING' which is old fashion. So this patch add additional
transformation.

src/bin/nydusd/service_controller.rs

@@ -241,6 +241,9 @@ pub fn create_daemon(subargs: &SubCmdArgs, bti: BuildTimeInfo) -> Result<Arc<dyn
     let daemon = Arc::new(service_controller);
     let machine = DaemonStateMachineContext::new(daemon.clone(), from_client, to_client);
     machine.kick_state_machine()?;
+    daemon
+        .on_event(DaemonStateMachineInput::Mount)
+        .map_err(|e| eother!(e))?;
     daemon
         .on_event(DaemonStateMachineInput::Start)
         .map_err(|e| eother!(e))?;

src/bin/nydusd/virtiofs.rs

@@ -399,6 +399,9 @@ pub fn create_virtiofs_daemon(
     if let Some(cmd) = mount_cmd {
         daemon.service.mount(cmd)?;
     }
+    daemon
+        .on_event(DaemonStateMachineInput::Mount)
+        .map_err(|e| eother!(e))?;
     daemon
         .on_event(DaemonStateMachineInput::Start)
         .map_err(|e| eother!(e))?;