Add public_replication to python setup module

Still not sure why globs don't work correctly here in portage python
package.

BUG=b:195298103
TEST=sudo emerge cros-config-api

Change-Id: I34db4a20501e1932d40ee20ebb2abf958d1a30b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/config/+/3173489
Auto-Submit: C Shapiro <shapiroc@chromium.org>
Reviewed-by: Sean McAllister <smcallis@google.com>
Reviewed-by: Andrew Lamb <andrewlamb@chromium.org>
Commit-Queue: Sean McAllister <smcallis@google.com>
diff --git a/python/setup.py b/python/setup.py
index cada5c8..6dc5e61 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -16,6 +16,7 @@
           'config/api/software/*.py',
           'config/api/software/**/*.py',
           'config/payload/*.py',
+          'config/public_replication/*.py',
           'config/test/*.py',
           'config/test/fake_program/*',
           'config/test/fake_project/*',