Update edx-drf-extensions to 2.0.0.

Note: this version update is backward incompatible.

ARCH-255

common/djangoapps/enrollment/views.py

@@ -10,7 +10,8 @@ from django.db import transaction
 from django.contrib.auth import get_user_model
 from django.core.exceptions import ObjectDoesNotExist
 from django.utils.decorators import method_decorator
-from edx_rest_framework_extensions.authentication import JwtAuthentication, SessionAuthenticationAllowInactiveUser
+from edx_rest_framework_extensions.auth.jwt.authentication import JwtAuthentication
+from edx_rest_framework_extensions.auth.session.authentication import SessionAuthenticationAllowInactiveUser
 from enrollment import api
 from enrollment.errors import CourseEnrollmentError, CourseEnrollmentExistsError, CourseModeNotFoundError
 from opaque_keys import InvalidKeyError

common/djangoapps/entitlements/api/v1/views.py

@@ -5,7 +5,7 @@ from django.db.models import Q
 from django.http import HttpResponseBadRequest
 from django.utils import timezone
 from django_filters.rest_framework import DjangoFilterBackend
-from edx_rest_framework_extensions.authentication import JwtAuthentication
+from edx_rest_framework_extensions.auth.jwt.authentication import JwtAuthentication
 from edx_rest_framework_extensions.paginators import DefaultPagination
 from opaque_keys import InvalidKeyError
 from opaque_keys.edx.keys import CourseKey

common/djangoapps/third_party_auth/api/views.py

@@ -4,7 +4,7 @@ Third Party Auth REST API views
 from django.contrib.auth.models import User
 from django.db.models import Q
 from django.http import Http404
-from edx_rest_framework_extensions.authentication import SessionAuthenticationAllowInactiveUser
+from edx_rest_framework_extensions.auth.session.authentication import SessionAuthenticationAllowInactiveUser
 from rest_framework import exceptions, status
 from rest_framework.generics import ListAPIView
 from rest_framework.response import Response