Add an environment variable for a custom token with an uppercase name

[srodenhuis]

When using the Helm chart with an additional key/value pair to be used as an environment variable for a custom token, the env in the deployment.yaml uses the $key as the name of the variable and the $key as the key for the secretKeyRef.

I would like to be able to use the following key/value pair:

credentials:
  extraEnvVars:
    my_token: <my-secret-token-here>

Resulting in a secretKeyRef where the name of the env is in uppercase:

- name: MY_TOKEN
  valueFrom:
    secretKeyRef:
      name: velero
      key: my_token 

proposed solution:

{{- with .Values.credentials.extraEnvVars }}
{{- range $key, $value := . }}
  - name: {{ default "none" (upper $key) }}
    valueFrom:
      secretKeyRef:
        name: {{ include "velero.secretName" $ }}
        key: {{ default "none" $key }}
{{- end }}