Make all email attachments reference the same file in the staging env…

… as a form of obfuscation

We don't want to reference the actual email attachments in the test system as
they may contain PII or other sensitive data. We could generate fake files
which would be nice for testing but this seems impractical - it woulds take too
long to generate and upload files via this script so it would have to be done
via another task. For the moment we will just reference the same,
non-sensitive, file for all attachments.

app/core/management/commands/obfuscate_data.py

@@ -8,7 +8,7 @@
 from django.core.management.base import BaseCommand
 from django.db import transaction
 from django.db.models import Q
-from emails.models import Email
+from emails.models import Email, EmailAttachment
 from mimesis import Generic
 from mimesis.locales import Locale
 from utils.signals import disable_signals, restore_signals
@@ -107,13 +107,16 @@ def handle(self, *args, **kwargs):
             ]
             e.save()
 
-        # TODO: email attachments
-
         for s in services:
             if s.notes:
                 s.notes = generic.text.sentence()
                 s.save()
 
+        # Replace files attached to emails
+        EmailAttachment.objects.update(
+            file="email-attachments/do-your-best.png", content_type="image/png"
+        )
+
         # Replace uploaded files
         FileUpload.objects.update(file="file-uploads/do-your-best.png")