Add make-admin command to uncloud_auth

uncloud_auth/management/commands/make-admin.py

@@ -0,0 +1,16 @@
+from django.core.management.base import BaseCommand
+from django.contrib.auth import get_user_model
+import sys
+
+class Command(BaseCommand):
+    help = 'Give Admin rights to existing user'
+
+    def add_arguments(self, parser):
+        parser.add_argument('username', type=str)
+
+    def handle(self, *args, **options):
+        user = get_user_model().objects.get(username=options['username'])
+        user.is_staff = True
+        user.save()
+
+        print("{} is now admin.".format(user.username))