Add extraEnv value

[xTrekStorex]

Overview

Allows for custom env vars in the pod to debug or work around changes in the binary not yet covered by the helm chart. Provides support for cases like: https://github.com/1Password/scim-examples/issues/244 No need to manually reconfigure the deployment. Especially useful in a gitops environment without option for drift between helm and its resources.

Changes

• Add extraEnv variable to values.yaml - default value is empty string (safe)
• Add extraEnv templating to container env section in deployment.yaml

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Checklist

• [x] review the guide to contributing