Add custom django command for mass creating VMs for users

circle/vm/management/commands/mass_create_vms.py

+from django.core.management.base import BaseCommand
+from vm.models import Instance, InstanceTemplate
+
+
+class Command(BaseCommand):
+    def add_arguments(self, parser):
+        parser.add_argument('template_id', type=int)
+        parser.add_argument('users_path')
+
+    def handle(self, *args, **options):
+        template = InstanceTemplate.objects.get(id=options['template_id'])
+        with open(options['users_path']) as f:
+            users = f.read().splitlines()
+        missing_users = Instance.mass_create_for_users(template, users)
+        if len(missing_users) > 0:
+            self.stdout.write('These users do not exist:')
+            for user in missing_users:
+                self.stdout.write(user)