Initialize VLC getters and metrics, fix some bugs in infra logic, needs to be refactored later on

desktop_env/envs/desktop_env.py

@@ -85,7 +85,8 @@ class DesktopEnv(gym.Env):
         # Initialize emulator and controller
         print("Initializing...")
         self._start_emulator()
-        self.host = f"http://{self._get_vm_ip()}:5000"
+        self.vm_ip = self._get_vm_ip()
+        self.host = f"http://{self.vm_ip}:5000"
         self.controller = PythonController(http_server=self.host)
         self.setup_controller = SetupController(http_server=self.host, cache_dir=self.cache_dir)