INCR-213 run modernizer on djangoapps migrations & management (#20426)

* INCR-213 run modernizer on djangoapps migrations & management

* fix python 2 to 3 pylint redefined built in `reduce` warning

* regroup imports

* group the `__future__` imports in programs migration files

openedx/core/djangoapps/programs/management/commands/backpopulate_program_credentials.py

@@ -1,14 +1,17 @@
 """Management command for backpopulating missing program credentials."""
+from __future__ import absolute_import
+
 import logging
 from collections import namedtuple
+from functools import reduce  # pylint: disable=redefined-builtin
 
 from django.contrib.sites.models import Site
 from django.core.management import BaseCommand
 from django.db.models import Q
 from opaque_keys.edx.keys import CourseKey
 
-from lms.djangoapps.certificates.models import CertificateStatuses, GeneratedCertificate
 from course_modes.models import CourseMode
+from lms.djangoapps.certificates.models import CertificateStatuses, GeneratedCertificate
 from openedx.core.djangoapps.catalog.utils import get_programs
 from openedx.core.djangoapps.programs.tasks.v1.tasks import award_program_certificates
 

openedx/core/djangoapps/programs/migrations/0001_initial.py

@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
-from django.db import migrations, models
 import django.db.models.deletion
 from django.conf import settings
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

openedx/core/djangoapps/programs/migrations/0002_programsapiconfig_cache_ttl.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0003_auto_20151120_1613.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0004_programsapiconfig_enable_certification.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0005_programsapiconfig_max_retries.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0006_programsapiconfig_xseries_ad_enabled.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0007_programsapiconfig_program_listing_enabled.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0008_programsapiconfig_program_details_enabled.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0009_programsapiconfig_marketing_path.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0010_auto_20170204_2332.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0011_auto_20170301_1844.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models
 

openedx/core/djangoapps/programs/migrations/0012_auto_20170419_0018.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.db import migrations, models