package/keepalived: add KEEPALIVED_CPE_ID_VENDOR

cpe:2.3:a:keepalived:keepalived is a valid CPE identifier for this
package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 00cb0f00fa6c5e992097c6cb6188da4606bac7a9)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/keepalived/keepalived.mk

@@ -9,6 +9,7 @@ KEEPALIVED_SITE = http://www.keepalived.org/software
 KEEPALIVED_DEPENDENCIES = host-pkgconf openssl
 KEEPALIVED_LICENSE = GPL-2.0+
 KEEPALIVED_LICENSE_FILES = COPYING
+KEEPALIVED_CPE_ID_VENDOR = keepalived
 KEEPALIVED_CONF_OPTS = --disable-hardening
 
 ifeq ($(BR2_PACKAGE_JSON_C),y)