fs: Add CanHaveEmptyDirectories and BucketBased feature flags to all remotes

amazonclouddrive/amazonclouddrive.go

@@ -190,7 +190,11 @@ func NewFs(name, root string) (fs.Fs, error) {
 		pacer:        pacer.New().SetMinSleep(minSleep).SetPacer(pacer.AmazonCloudDrivePacer),
 		noAuthClient: fs.Config.Client(),
 	}
-	f.features = (&fs.Features{CaseInsensitive: true, ReadMimeType: true}).Fill(f)
+	f.features = (&fs.Features{
+		CaseInsensitive:         true,
+		ReadMimeType:            true,
+		CanHaveEmptyDirectories: true,
+	}).Fill(f)
 
 	// Renew the token in the background
 	f.tokenRenewer = oauthutil.NewRenew(f.String(), ts, func() error {