Provision Redis Pods and Secrets for accounts.eclipse.org (Staging and Production)

We need to provision Redis infrastructure and secrets for both staging and production environments following the existing MR configuration.

Provision Redis pods for:

• Staging environment
• Production environment

Note: Follow the configuration defined in https://gitlab.eclipse.org/eclipsefdn/software-dev/websites/accounts.eclipse.org/-/merge_requests/233

Create and manage the following secrets per environment:

• REDIS_PASSWORD
• REDIS_HOST

Update deployment configuration to reference these secrets instead of hardcoded values

/cc @eclipsefdn/it/releng