devops: Adding support for envFrom k8s secrets and configmap

[akhilrajmailbox]

This PR adding support for envFrom option for both worker and web deployment and global configuration. This is required when we are using CD tools such as ArgoCD or FluxCD, and where we don't want to hardcode the data in the additionalEnv section of the helm values. This will allow as to use the external secret with all required data without hard coding it in the helm values file in the repo

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Important

Adds envFrom support in web and worker deployments to source environment variables from external secrets or configmaps, enhancing flexibility for CD tools.

• Behavior:
  • Adds envFrom support in web/deployment.yaml and worker/deployment.yaml to source environment variables from external secrets or configmaps.
  • Useful for CD tools like ArgoCD or FluxCD to avoid hardcoding environment variables.
• Configuration:
  • Introduces additionalEnvFrom in values.yaml for global, web, and worker configurations.
  • Allows specifying secrets or configmaps for environment variables in values.yaml.

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[Steffen911]

@akhilrajmailbox Do you think you could add a test case that confirms whether they are rendered correctly?

[akhilrajmailbox]

@Steffen911

I don't have the exact test case now, but the following steps can help to test it with the feature I added in this PR

• value.yaml file>>

langfuse:
  additionalEnvFrom:
    - secretRef:
        name: langfuse-env-secrets

• the secret data can be

apiVersion: v1
kind: Secret
metadata:
  name: langfuse-env-secrets
type: Opaque
stringData:
  CLICKHOUSE_DB: "langfuse_prod"
  LANGFUSE_INIT_USER_EMAIL: "admin@example.com"
  LANGFUSE_INIT_USER_PASSWORD: "securedata"

This will add these variable to both worker and web containers. if we need specific container we need to add the additionalEnvFrom in the respective section like how we are passing the additionalEnv params