patch: rc(8) pass args to rc.local(8)

[leo_tck]

rc(8) does not pass its arguments to rc.local(8); this makes the latter
unable to check for the 'autoboot' or 'shutdown' args.

Patch below fixes this by simply passing the arguments.

        --zeurkous.

Index: src/etc/rc
===================================================================
RCS file: /cvs/src/etc/rc,v
retrieving revision 1.529
diff -u -p -r1.529 rc
--- src/etc/rc  23 Jul 2018 11:54:49 -0000      1.529
+++ src/etc/rc  25 Dec 2018 00:59:55 -0000
@@ -603,7 +603,7 @@ if [[ -n $pkg_scripts ]]; then
        echo '.'
 fi
 
-[[ -f /etc/rc.local ]] && sh /etc/rc.local
+[[ -f /etc/rc.local ]] && sh /etc/rc.local "${@}"
 
 # Disable carp interlock.
 ifconfig -g carp -carpdemote 128