setup.py: Do not include rendered files in SOURCES.txt

cloud-init renders template files during its run of setup.py.
Those rendered files were in a temp dir and were making their
way into the SOURCES.txt file.  That caused problems for SuSE's build
system that desired for reproducible builds.
  https://reproducible-builds.org/

We do not want to include those, so here we explicitly prune them out.

The issue of SOURCES.txt containing tmp files was reproducible with:
  $ rm -Rf cloud_init.egg-info
  $ git clean --force
  $ rm -Rf ../root.d; python3 setup.py install --root=../root.d
  $ grep ^tmp cloud_init.egg-info/SOURCES.txt

goo: http://bugzilla.opensuse.org/show_bug.cgi?id=1069635

0 files changed, 0 insertions, 0 deletions