Add line to copy default ad list into /etc/pihole

automated install/basic-install.sh

@@ -434,6 +434,7 @@ runGravity(){
 	$SUDO echo "::: Preparing to run gravity.sh to refresh hosts..."
 	if ls /etc/pihole/list* 1> /dev/null 2>&1; then
 		echo "::: Cleaning up previous install (preserving whitelist/blacklist)"
+		$SUDO cp -o /etc/.pihole/adlists.default /etc/pihole/adlists.default
 		$SUDO rm /etc/pihole/list.*
 	fi
 	#Don't run as SUDO, this was causing issues