Bring back the possibility to override the default assignee

This is doable for packages that are retired (and thus where the
assignee is orphan) as well as per product: Fedora vs Fedora EPEL being
the most common.

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

distgit_bugzilla_sync/script.py

@@ -358,21 +358,6 @@ def send_email(fromAddress, toAddress, subject, message, ccAddress=None):
         smtp.quit()
 
 
-@cache.cache_on_arguments()
-def _get_override_yaml(project, session):
-    pagure_override_url = '{0}/{1}/raw/master/f/{2}/{3}'.format(
-        env['pagure_url'].rstrip('/'), env['bugzilla']['override_repo'], project['namespace'],
-        project['name'])
-
-    if config["verbose"]:
-        print('Querying {0}'.format(pagure_override_url))
-    override_rv = session.get(pagure_override_url, timeout=30)
-    if override_rv.status_code == 200:
-        override_yaml = yaml.safe_load(override_rv.text)
-        return override_yaml.get('bugzilla_contact', {})
-    return {}
-
-
 def _get_pdc_branches(session, repo):
     """
     Gets the branches on a project. This function is used for mapping.
@@ -585,6 +570,23 @@ class DistgitBugzillaSync:
 
             self.pagure_projects[idx] = project
 
+    @cache.cache_on_arguments()
+    def _get_override_yaml(self, project, session):
+        pagure_override_url = '{0}/{1}/raw/master/f/{2}/{3}'.format(
+            self.env['pagure_url'].rstrip('/'),
+            self.env['bugzilla']['override_repo'],
+            project['namespace'],
+            project['name'],
+        )
+
+        if self.env["verbose"]:
+            print('Querying {0}'.format(pagure_override_url))
+        override_rv = session.get(pagure_override_url, timeout=30)
+        if override_rv.status_code == 200:
+            override_yaml = yaml.safe_load(override_rv.text)
+            return override_yaml.get('bugzilla_contact', {})
+        return {}
+
     def main(self):
         """The entrypoint to the script."""
         global envname, env, projects_dict
@@ -661,11 +663,22 @@ class DistgitBugzillaSync:
                         print(f"Ignoring: {product}/{project['name']}")
                     continue
 
+                owner = project["poc"]
+                # Check if the project is retired in PDC, and if so set assignee to orphan.
+                if _is_retired(product, project):
+                    owner = 'orphan'
+
+                # Check if the Bugzilla ticket assignee has been manually overridden
+                override_yaml = self._get_override_yaml(project, self.session)
+                if override_yaml.get(product) \
+                        and isinstance(override_yaml[product], str):
+                    owner = override_yaml[product]
+
                 try:
                     bugzilla.add_edit_component(
                         package=project["name"],
                         collection=product,
-                        owner=project['poc'],
+                        owner=owner,
                         description=project['summary'],
                         qacontact=None,
                         cclist=project['watchers']