package/python-py: add CPE variables

cpe:2.3:a:pytest:py is a valid CPE identifier for this package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 24729c897192f987847035b18cbc5aebe3c6d16d)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-py/python-py.mk

@@ -11,5 +11,7 @@ PYTHON_PY_DEPENDENCIES = host-python-setuptools-scm
 PYTHON_PY_SETUP_TYPE = setuptools
 PYTHON_PY_LICENSE = MIT
 PYTHON_PY_LICENSE_FILES = LICENSE
+PYTHON_PY_CPE_ID_VENDOR = pytest
+PYTHON_PY_CPE_ID_PRODUCT = py
 
 $(eval $(python-package))