nginx: set CVE_PRODUCT

nginx has a long history, and has used multiple CPEs
over time. Set CVE_PRODUCT to reflect current and historic
vendor:product pairs.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit d25aadbbb5)
Signed-off-by: Colin Pinnell McAllister <colin.mcallister@garmin.com>
Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-webserver/recipes-httpd/nginx/nginx.inc

@@ -190,3 +190,5 @@ USERADD_PARAM:${PN} = " \
     --home ${NGINX_WWWDIR} \
     --groups www-data \
     --user-group ${NGINX_USER}"
+
+CVE_PRODUCT = "nginx:nginx f5:nginx_open_source f5:nginx"