Ignore deb-* packaging repos in the plugin list

This commit starts ignoring plugin hits from deb-* repos when generating
the plugin list for the plugin registry doc. These are just packaging
repos and not really relevant for a plugin list.

Change-Id: I5146936824c17476d4e7f3fab058c80fd932e512
diff --git a/tools/generate-tempest-plugins-list.py b/tools/generate-tempest-plugins-list.py
index 03dbd9b..03e838e 100644
--- a/tools/generate-tempest-plugins-list.py
+++ b/tools/generate-tempest-plugins-list.py
@@ -48,6 +48,8 @@
 
 
 def has_tempest_plugin(proj):
+    if proj.startswith('openstack/deb-'):
+        return False
     r = requests.get(
         "https://git.openstack.org/cgit/%s/plain/setup.cfg" % proj)
     p = re.compile('^tempest\.test_plugins', re.M)