Added a progress bar to the submission checker json field upgrade migration.

 - Legacy-Id: 14276

Author: levkowetz

ietf/submit/migrations/0022_submission_check_json_upgrade.py

@@ -2,6 +2,8 @@
 # Generated by Django 1.10.8 on 2017-10-27 06:34
 from __future__ import unicode_literals
 
+from tqdm import tqdm
+
 from django.db import migrations
 
 # convert the SubmissionCheck.items to consistently be a dict, with the
@@ -13,11 +15,11 @@
 #      'draft': <draftname>;
 #      'modules': { <extracted module info> },
 #    }
-
+tqdm.monitor_interval = 0               # workaround for spurious error in tqdm's monitoring thread
 
 def forwards(apps, schema_editor):
     SubmissionCheck = apps.get_model('submit', 'SubmissionCheck')
-    for check in SubmissionCheck.objects.all().order_by('id'):
+    for check in tqdm(SubmissionCheck.objects.all()):
         # deal with these cases:
         #   * empty dictionary
         #   * empty list