title: Error: Please define stage 'create_pg_db' in your Zappa settings
body: <p><strong>Intro:</strong> I am deploying a django app to AWS lambda severlessly using zappa. My RDS instance has a postgres database. I am watching <a href="https://www.youtube.com/watch?v=ixRZfVBn_A8&amp;t=911s" rel="nofollow noreferrer">rich jones djangocon video</a> on how to deploy django app severlessly using zappa. So far I have managed to reach the part where I need to add a database to my project. I have already done <code>pip install zappa-django-utils</code> and added it to my <code>INSTALLED_APPS</code>. Now when I try to run </p>
  
  <p><code>zappa manage create_pg_db production</code> I get the error:</p>
  
  <pre><code>Error: Please define stage 'create_pg_db' in your Zappa settings.
  </code></pre>
  
  <p>I even tried <code>zappa manage create_pg_db</code> I am still getting the same error </p>
  
  <p><strong>Below is how my zappa_settings.json file looks:</strong></p>
  
  <pre><code>{
      "production": {
          "aws_region": "us-east-1",
          "django_settings": "Cool.settings",
          "profile_name": "default",
          "project_name": "cool",
          "runtime": "python3.6",
          "s3_bucket": "cool-7dsfsdf5",
          "project_directory": "/tmp/code",
          "slim_handler": true,
          "vpc config": {
              "SubnetIds": [
                  "subnet-3132ss13b",
                  "subnet-321321319",
                  "subnet-2c2313223",
                  "subnet-5ljlkjljd",
                  "subnet-132121357",
                  "subnet-f925f9c7"
              ],
              "SecurityGroupIds": [
                  "sg-a9asdasd"
              ]
          }
      },
      "production_ap_northeast_1": {
          "aws_region": "ap-northeast-1",
          "extends": "production"
      },
      "production_ap_northeast_2": {
          "aws_region": "ap-northeast-2",
          "extends": "production"
      },
      ... All regions..
  }
  </code></pre>
  
  <p>How do I define stage <code>create_pg_db</code> in your Zappa settings. Does anyone know the steps ahead of this. </p>
  
  <p><strong>Results with</strong> <code>zappa manage production create_pg_db</code> </p>
  
  <pre><code>(Venv) $ django-admin --version
  1.11.15
  (Venv) $ zappa manage production create_pg_db
  [START] RequestId: c621321b9-611d-4457-9c23-f65465653dd Version: $LATEST
  [DEBUG] 2019-01-28T04:55:05.629Z c6231b9-611d-4457-9c23-f6064654653dd Zappa Event: {'manage': 'create_pg_db'}
  No module named 'django': ModuleNotFoundError
  Traceback (most recent call last):
    File "/var/task/handler.py", line 580, in lambda_handler
      return LambdaHandler.lambda_handler(event, context)
    File "/var/task/handler.py", line 248, in lambda_handler
      return handler.handler(event, context)
    File "/var/task/handler.py", line 399, in handler
      from django.core import management
  ModuleNotFoundError: No module named 'django'
  [END] RequestId: c621321b9-611d-4457-9c23-f65465653dd
  [REPORT] RequestId: c621321b9-611d-4457-9c23-f65465653dd
  Duration: 1.85 ms
  Billed Duration: 100 ms 
  Memory Size: 512 MB
  Max Memory Used: 512 MB
  
  Error: Unhandled error occurred while invoking command.
  </code></pre>