Add create_cgitrepos.py file

The create_cgitrepos.py is used to generate a cgitrepos config file
from projects.yaml for cgit to use.

Change-Id: I54e09634f1cbb7595d7db629ce7e16a883c5f5b6
Reviewed-on: https://review.openstack.org/35856
Reviewed-by: James E. Blair <corvus@inaugust.com>
Approved: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins
diff --git a/setup.cfg b/setup.cfg
index ef88ce8..4673363 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -23,6 +23,7 @@
 [entry_points]
 console_scripts =
     close-pull-requests = jeepyb.cmd.close_pull_requests:main
+    create-cgitrepos = jeepyb.cmd.create_cgitrepos:main
     expire-old-reviews = jeepyb.cmd.expire_old_reviews:main
     fetch-remotes = jeepyb.cmd.fetch_remotes:main
     manage-projects = jeepyb.cmd.manage_projects:main