Add the possibility to ignore some users

These users, who should only ever be CC'ed to a project, will not
be synced to bugzilla.
In other words, they are allowed to not have a bugzilla account
and that should not impact the syncing of the default assignee and
CC list from dist-git to bugzilla.

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

distgit_bugzilla_sync/script.py

@@ -987,6 +987,13 @@ class DistgitBugzillaSync:
             project["products_poc"] = products_poc
             project["products_retired"] = products_retired
 
+            # Clean up the watchers we never want to sync to bugzilla
+            # If these users are POC for a project, things will not work, which
+            # is expected/desired.
+            for user in (self.config.get("ignorable_accounts") or []):
+                if user in (project.get("watchers") or []):
+                    project["watchers"].remove(user)
+
             self.pagure_projects[idx] = project
 
     @classmethod