Implement reconnects integrated with health checks

[salaboy]

@mcruzdev, here is a quick checklist to document progress on the reconnect implementation:

• Frontend:
  • reconnect functionality to connect with Kafka,
  • readiness endpoint should return non-200 if the service cannot connect to Kafka
  • readiness probe should be configured to wait at least 20 seconds before trying to check if it is connected and then retry every 10 seconds
• C4P:
  • all the steps for Kafka described for the Frontend
  • reconnect to PostgreSQL
  • integrated with the readiness endpoint if cannot connect to PostgreSQL, the service shouldn't be marked as ready
• Agenda:
  • all the steps for Kafka described for the Frontend
  • reconnect to Redis
  • integrated with the readiness endpoint if cannot connect to Redis, the service shouldn't be marked as ready
• Nofications:
  • all the steps for Kafka described for the Frontend