package/libldns: add CPE variables

cpe:2.3:a:nlnetlabs:ldns is a valid CPE identifier for this package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Anlnetlabs%3Aldns

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit c2bc364c083407c598cb3a40de125cc079c28a60)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libldns/libldns.mk

@@ -9,6 +9,8 @@ LIBLDNS_SOURCE = ldns-$(LIBLDNS_VERSION).tar.gz
 LIBLDNS_SITE = http://www.nlnetlabs.nl/downloads/ldns
 LIBLDNS_LICENSE = BSD-3-Clause
 LIBLDNS_LICENSE_FILES = LICENSE
+LIBLDNS_CPE_ID_VENDOR = nlnetlabs
+LIBLDNS_CPE_ID_PRODUCT = ldns
 LIBLDNS_INSTALL_STAGING = YES
 LIBLDNS_DEPENDENCIES = openssl
 # --disable-dane-verify can be removed after openssl bump to 1.1.x