lowercase instance names (fix #48)

backend/scraper/management/commands/scrape.py

@@ -76,7 +76,8 @@ class Command(BaseCommand):
         if response.status_code != 200 or not isinstance(peers, list) or get_key(peers, ['error']):
             raise InvalidResponseException("Could not get peers for {}".format(instance_name))
         # Get rid of peers that just say "null" and the instance itself
-        return [peer for peer in peers if peer and peer != instance_name]
+        # Also make sure to lowercase all instance names; otherwise there'll be some duplicates
+        return [peer.lower() for peer in peers if peer and peer != instance_name]
 
     @staticmethod
     def get_statuses(instance_name: str):