input: Write a function to generate a Kubernetes pod configuration that publishes a tweet every 5 minutes. The function should return a string containing the complete YAML configuration for the pod and a ConfigMap. If the image path for the tweet publisher is not provided, the function should return an empty string indicating an error. The function should take in the image path as an input argument. If the input image path is not in a public registry, the function should return an empty string.
  
  assert create_tweet_publisher_pod("mytweetpublisherimage") == '''apiVersion: v1
  kind: Pod
  metadata:
    name: tweet-publisher
  spec:
    containers:
      - name: tweet-publisher
        image: mytweetpublisherimage
        command:
          - sh
          - -c
          - 'crontab -lcrontab && while true; do python publish-tweet.py && crontab -l | { cat; echo "*/5 * * * * python publish-tweet.py"; } | crontab -; sleep 31622400; done'
        volumeMounts:
          - mountPath: /crontab/crontab
            subPath: crontab
            name: cronmount
    volumes:
      - name: cronmount
        configMap:
          name: tweet-cron
  ---
  apiVersion: v1
  kind: ConfigMap
  metadata:
    name: tweet-cron
  data:
    crontab: "* * * * * python publish-tweet.py"
  '''
  assert create_tweet_publisher_pod("") == ""
  assert create_tweet_publisher_pod("notpublicregistry/tweetpublish") == ""
output: def create_tweet_publisher_pod(image_path):
      if not image_path or "/" not in image_path:
          return ""
      
      return f'''apiVersion: v1
  kind: Pod
  metadata:
    name: tweet-publisher
  spec:
    containers:
      - name: tweet-publisher
        image: {image_path}
        command:
          - sh
          - -c
          - 'crontab -lcrontab && while true; do python publish-tweet.py && crontab -l | {{ cat; echo "*/5 * * * * python publish-tweet.py"; }} | crontab -; sleep 31622400; done'
        volumeMounts:
          - mountPath: /crontab/crontab
            subPath: crontab
            name: cronmount
    volumes:
      - name: cronmount
        configMap:
          name: tweet-cron
  ---
  apiVersion: v1
  kind: ConfigMap
  metadata:
    name: tweet-cron
  data:
    crontab: "* * * * * python publish-tweet.py"
  '''