Account for Django block on DDL in transactions

common/djangoapps/database_fixups/migrations/0001_initial.py

@@ -31,5 +31,5 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(add_email_uniqueness_constraint)
+        migrations.RunPython(add_email_uniqueness_constraint, atomic=False)
     ]

lms/djangoapps/coursewarehistoryextended/migrations/0001_initial.py

@@ -53,5 +53,5 @@ class Migration(migrations.Migration):
                 'get_latest_by': 'created',
             },
         ),
-        migrations.RunPython(bump_pk_start, reverse_code=migrations.RunPython.noop),
+        migrations.RunPython(bump_pk_start, reverse_code=migrations.RunPython.noop, atomic=False),
     ]