sh testsuite: sync ash-vars/ and hush-vars/

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-vars/var4.right b/shell/ash_test/ash-vars/var4.right
new file mode 100644
index 0000000..8fed138
--- /dev/null
+++ b/shell/ash_test/ash-vars/var4.right
@@ -0,0 +1 @@
+bus/usb/1/2