ligoauth: add new X.509 certificate for emfollow acct

gracedb/ligoauth/migrations/0047_add_emfollow_cert.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.20 on 2019-08-06 18:06
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+ACCOUNT = {
+    'name': 'emfollow',
+    'new_cert': '/DC=org/DC=cilogon/C=US/O=LIGO/OU=Robots/CN=emfollow-playground.ligo.caltech.edu/CN=emfollow-playground/CN=Leo Singer/CN=UID:leo.singer.robot'
+}
+
+
+def add_cert(apps, schema_editor):
+    User = apps.get_model('auth', 'User')
+
+    # Get user
+    user = User.objects.get(username=ACCOUNT['name'])
+
+    # Create new certificate
+    user.x509cert_set.create(subject=ACCOUNT['new_cert'])
+
+
+def delete_cert(apps, schema_editor):
+    User = apps.get_model('auth', 'User')
+
+    # Get user
+    user = User.objects.get(username=ACCOUNT['name'])
+
+    # Delete new certificate
+    cert = user.x509cert_set.get(subject=ACCOUNT['new_cert'])
+    cert.delete()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ligoauth', '0046_delete_robotuser_model'),
+    ]
+
+    operations = [
+        migrations.RunPython(add_cert, delete_cert),
+    ]