Allow shell to start vendor shell

Test: adb shell /vendor/bin/sh
Fixes: 65448858
Change-Id: Ic2c9fa9b7e5bed3e1532f4e545f54a857ea99fc6
diff --git a/private/shell.te b/private/shell.te
index a3c49db..ded9d1f 100644
--- a/private/shell.te
+++ b/private/shell.te
@@ -36,3 +36,5 @@
 allow shell traced:fd use;
 allow shell traced_tmpfs:file { read write getattr map };
 unix_socket_connect(shell, traced_producer, traced)
+
+domain_auto_trans(shell, vendor_shell_exec, vendor_shell)