Replace optparse with argparse in the several management commands.

Specifically:
* fill_memcached_caches.py
* initialize_voyager_db.py
* logout_all_users.py

zerver/management/commands/fill_memcached_caches.py

@@ -2,14 +2,15 @@ from __future__ import absolute_import
 
 from typing import Any
 
-from optparse import make_option
+from argparse import ArgumentParser
 from django.core.management.base import BaseCommand
 from zerver.lib.cache_helpers import fill_remote_cache, cache_fillers
 
 class Command(BaseCommand):
-    option_list = BaseCommand.option_list + (
-        make_option('--cache', dest="cache", default=None),)
-    help = "Populate the memcached cache of messages."
+    def parse_arguments(self, parser):
+        # type: (ArgumentParser) -> None
+        parser.add_argument('--cache', dest="cache", default=None,
+                            help="Populate the memcached cache of messages.")
 
     def handle(self, *args, **options):
         # type: (*Any, **str) -> None

zerver/management/commands/initialize_voyager_db.py

@@ -11,7 +11,7 @@ from django.conf import settings
 from zerver.lib.bulk_create import bulk_create_users
 from zerver.lib.actions import set_default_streams, do_create_realm
 
-from optparse import make_option
+from argparse import ArgumentParser
 from six import text_type
 
 settings.TORNADO_SERVER = None
@@ -31,13 +31,13 @@ def create_users(name_list, bot_type=None):
 class Command(BaseCommand):
     help = "Populate an initial database for Zulip Voyager"
 
-    option_list = BaseCommand.option_list + (
-        make_option('--extra-users',
-                    dest='extra_users',
-                    type='int',
-                    default=0,
-                    help='The number of extra users to create'),
-        )
+    def parse_arguments(self, parser):
+        # type: (ArgumentParser) -> None
+        parser.add_argument('--extra-users',
+                            dest='extra_users',
+                            type=int,
+                            default=0,
+                            help='The number of extra users to create')
 
     def handle(self, *args, **options):
         # type: (*Any, **Any) -> None

zerver/management/commands/logout_all_users.py

@@ -1,7 +1,7 @@
 from __future__ import absolute_import
 
 from typing import Any
-from optparse import make_option
+from argparse import ArgumentParser
 
 from django.core.management.base import BaseCommand
 
@@ -12,17 +12,18 @@ from zerver.models import get_realm
 class Command(BaseCommand):
     help = "Log out all users."
 
-    option_list = BaseCommand.option_list + (
-        make_option('--realm',
-                    dest='realm',
-                    action='store',
-                    default=None,
-                    help="Only logout all users in a particular realm"),
-        make_option('--deactivated-only',
-                    action='store_true',
-                    default=False,
-                    help="Only logout all users who are deactivated"),
-        )
+    def parse_arguments(self, parser):
+        # type: (ArgumentParser) -> None
+        parser.add_argument('--realm',
+                            dest='realm',
+                            action='store',
+                            default=None,
+                            help="Only logout all users in a particular realm")
+        parser.add_argument('--deactivated-only',
+                            action='store_true',
+                            default=False,
+                            help="Only logout all users who are deactivated")
+
 
     def handle(self, *args, **options):
         # type: (*Any, **Any) -> None