package/python-urllib3: add host variant

A host variant of the python-urllib3 package will be needed for the
host-python-requests package.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/python-urllib3/python-urllib3.mk

@@ -12,5 +12,7 @@ PYTHON_URLLIB3_LICENSE_FILES = LICENSE.txt
 PYTHON_URLLIB3_CPE_ID_VENDOR = python
 PYTHON_URLLIB3_CPE_ID_PRODUCT = urllib3
 PYTHON_URLLIB3_SETUP_TYPE = setuptools
+HOST_PYTHON_URLLIB3_NEEDS_HOST_PYTHON = python3
 
 $(eval $(python-package))
+$(eval $(host-python-package))