Bugfix to a few migrations for creating robot accounts

Previously forgot to add deepclean and gwhen robot users to the
LVC group.

gracedb/ligoauth/migrations/0021_create_deepclean_account_and_certs.py

@@ -2,6 +2,7 @@
 # Generated by Django 1.11.16 on 2019-01-04 18:39
 from __future__ import unicode_literals
 
+from django.conf import settings
 from django.db import migrations
 
 ACCOUNT = {
@@ -20,10 +21,15 @@ CERTS = [
 def create_account_and_certs(apps, schema_editor):
     RobotUser = apps.get_model('ligoauth', 'RobotUser')
     X509Cert = apps.get_model('ligoauth', 'X509Cert')
+    Group = apps.get_model('auth', 'Group')
 
     # Create user
     user = RobotUser.objects.create(**ACCOUNT)
 
+    # Add user to LVC group
+    group = Group.objects.get(name=settings.LVC_GROUP)
+    group.user_set.add(user)
+
     # Create X509 certificates
     for subject in CERTS:
         user.x509cert_set.create(subject=subject)

gracedb/ligoauth/migrations/0024_create_gwhen_account_and_certs.py

@@ -2,6 +2,7 @@
 # Generated by Django 1.11.18 on 2019-02-18 19:50
 from __future__ import unicode_literals
 
+from django.conf import settings
 from django.db import migrations
 
 ACCOUNT = {
@@ -19,10 +20,15 @@ CERTS = [
 def create_account_and_certs(apps, schema_editor):
     RobotUser = apps.get_model('ligoauth', 'RobotUser')
     X509Cert = apps.get_model('ligoauth', 'X509Cert')
+    Group = apps.get_model('auth', 'Group')
 
     # Create user
     user = RobotUser.objects.create(**ACCOUNT)
 
+    # Add user to LVC group
+    group = Group.objects.get(name=settings.LVC_GROUP)
+    group.user_set.add(user)
+
     # Create X509 certificates
     for subject in CERTS:
         user.x509cert_set.create(subject=subject)