Adding updates for python3 compatibility and new virtualbox SDK version support.

salt/utils/virtualbox.py

@@ -132,6 +132,12 @@ def vb_get_manager():
     '''
     global _virtualboxManager
     if _virtualboxManager is None and HAS_LIBS:
+        try:
+            from importlib import reload
+        except ImportError:
+            # If we get here, we are in py2 and reload is a built-in.
+            pass
+
         # Reloading the API extends sys.paths for subprocesses of multiprocessing, since they seem to share contexts
         reload(vboxapi)
         _virtualboxManager = vboxapi.VirtualBoxManager(None, None)
@@ -146,7 +152,13 @@ def vb_get_box():
     @rtype: IVirtualBox
     '''
     vb_get_manager()
-    vbox = _virtualboxManager.vbox
+
+    try:
+        # This works in older versions of the SDK, but does not seem to work anymore.
+        vbox = _virtualboxManager.vbox
+    except AttributeError:
+        vbox = _virtualboxManager.getVirtualBox()
+
     return vbox