main/py-bluez: add missing py2-setuptools dependancy to fix failing build
After commit f9ef1aaa that renamed py-setuptools, the build of py-bluez fails with error
Traceback (most recent call last):
File "setup.py", line 3, in <module>
from setuptools import setup, Extension
ImportError: No module named setuptools
>>> ERROR: py-bluez: build failed
Adding py2-setuptools fixes the issue.