package/python-gunicorn: add CPE variables

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

  https://nvd.nist.gov/products/cpe/detail/DAF075D2-70F3-4D2A-B7C9-75A7A1C38C83

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/python-gunicorn/python-gunicorn.mk

@@ -10,5 +10,7 @@ PYTHON_GUNICORN_SITE = https://files.pythonhosted.org/packages/06/89/acd9879fa6a
 PYTHON_GUNICORN_SETUP_TYPE = setuptools
 PYTHON_GUNICORN_LICENSE = MIT
 PYTHON_GUNICORN_LICENSE_FILES = LICENSE
+PYTHON_GUNICORN_CPE_ID_VENDOR = gunicorn
+PYTHON_GUNICORN_CPE_ID_PRODUCT = gunicorn
 
 $(eval $(python-package))