package/python-pip: add CPE variables

cpe:2.3:a:pypa:pip is a valid CPE identifier for this package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit c845523fe24dfc8d9a00603c54e36fdb0d580696)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-pip/python-pip.mk

@@ -10,5 +10,7 @@ PYTHON_PIP_SITE = https://files.pythonhosted.org/packages/8e/76/66066b7bc7181723
 PYTHON_PIP_SETUP_TYPE = setuptools
 PYTHON_PIP_LICENSE = MIT
 PYTHON_PIP_LICENSE_FILES = LICENSE.txt
+PYTHON_PIP_CPE_ID_VENDOR = pypa
+PYTHON_PIP_CPE_ID_PRODUCT = pip
 
 $(eval $(python-package))