package/python-engineio: add PYTHON_ENGINEIO_CPE_ID_VENDOR

cpe:2.3:a:python-engineio_project:python-engineio is a valid CPE
identifier for this package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Apython-engineio_project%3Apython-engineio

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

package/python-engineio/python-engineio.mk

@@ -9,6 +9,7 @@ PYTHON_ENGINEIO_SITE = https://files.pythonhosted.org/packages/71/5d/620b75396ce
 PYTHON_ENGINEIO_SETUP_TYPE = setuptools
 PYTHON_ENGINEIO_LICENSE = MIT
 PYTHON_ENGINEIO_LICENSE_FILES = LICENSE
+PYTHON_ENGINEIO_CPE_ID_VENDOR = python-engineio_project
 
 ifeq ($(BR2_PACKAGE_PYTHON),y)
 # only needed/valid for python 3.x