ddb: /etc/ddb.conf is perfectly fine, always use it

(cherry picked from commit c5b1ddef)

plist

 /boot/brand-opnsense.4th
 /boot/logo-hourglass.4th
-/usr/local/etc/ddb.conf
 /usr/local/etc/devd/carp.conf
 /usr/local/etc/devd/ifnet.conf
 /usr/local/etc/dh-parameters.1024

src/etc/ddb.conf

-script lockinfo=show locks; show alllocks; show lockedvnods
-script kdb.enter.default=textdump set; capture on; run lockinfo; show pcpu; bt; ps; alltrace; capture off; call doadump; reset
-script kdb.enter.witness=run lockinfo

src/etc/rc.crashdump

@@ -7,9 +7,7 @@ while read DEV MP TYPE MORE; do
 	[ -c "${DEV}" ] || continue
 	if dumpon ${DEV}; then
 		echo ${DEV}
-		if [ -n "`sysctl -Nq debug.ddb.scripting.scripts`" ]; then
-			ddb /usr/local/etc/ddb.conf
-		fi
+		ddb /etc/ddb.conf
 		if savecore -C ${DEV} > /dev/null; then
 			savecore /var/crash ${DEV}
 		fi
@@ -18,3 +16,4 @@ while read DEV MP TYPE MORE; do
 done < /etc/fstab
 
 echo "/dev/null"
+ddb /etc/ddb.conf