make_metadata.py: Include optimize_upip plugin into setup.py generated.

make_metadata.py

@@ -12,7 +12,8 @@ import sys
 # module instead of system's.
 sys.path.pop(0)
 from setuptools import setup
-
+sys.path.append("..")
+import optimize_upip
 
 setup(name='micropython-%(dist_name)s',
       version='%(version)s',
@@ -24,6 +25,7 @@ setup(name='micropython-%(dist_name)s',
       maintainer=%(maintainer)r,
       maintainer_email='micro-python@googlegroups.com',
       license=%(license)r,
+      cmdclass={'optimize_upip': optimize_upip.OptimizeUpip},
       %(_what_)s=[%(modules)s]%(_inst_req_)s)
 """