package/python-httplib2: add CPE variables

cpe:2.3:a:httplib2_project:httplib2 is a valid CPE identifier for this
package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Ahttplib2_project%3Ahttplib2

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-httplib2/python-httplib2.mk

@@ -10,5 +10,7 @@ PYTHON_HTTPLIB2_SITE = https://files.pythonhosted.org/packages/ed/cd/533a1e9e046
 PYTHON_HTTPLIB2_SETUP_TYPE = setuptools
 PYTHON_HTTPLIB2_LICENSE = MIT
 PYTHON_HTTPLIB2_LICENSE_FILES = LICENSE
+PYTHON_HTTPLIB2_CPE_ID_VENDOR = httplib2_project
+PYTHON_HTTPLIB2_CPE_ID_PRODUCT = httplib2
 
 $(eval $(python-package))