Configure SSL for HTTPS ingress

## Feature Request

Is your feature request related to an existing [Issue](https://www.github.com/Auto-DL/k8s-deployment/issues) or a new implementation?

No

### Feature Description

As of now, all the communication between the services is using HTTP. It would be better to use HTTPS instead making it more secure. Create a configuration such that it supports multiple domains.

### Possible Solution

Use a certificate issuer like letsencrypt. Create a new pod/cluster containing the letsencrypt service to automate the generation and renewal of SSL certificates.

No files or tests are named. Start by reviewing the repository's Kubernetes ingress configuration and how services are exposed, then determine how HTTPS should support multiple domains with certificate issuance and renewal through Let's Encrypt. Done means the deployment serves those domains over HTTPS with automated certificate management.

Written by the indexing model from the issue text.