Fixed #19973 -- Replaced optparse by argparse in management commands

Thanks Tim Graham for the review.

tests/user_commands/management/commands/optparse_cmd.py

@@ -0,0 +1,19 @@
+from optparse import make_option
+
+from django.core.management.base import BaseCommand, CommandError
+
+
+class Command(BaseCommand):
+    help = "Test optparse compatibility."
+    args = ''
+
+    option_list = BaseCommand.option_list + (
+        make_option("-s", "--style", default="Rock'n'Roll"),
+        make_option("-x", "--example")
+    )
+
+    def handle(self, *args, **options):
+        example = options["example"]
+        # BaseCommand default option is available
+        options['verbosity']
+        self.stdout.write("All right, let's dance %s." % options["style"])