feat: add extra env support for helm chart (#2340)

helm/rustfs/values.yaml

@@ -98,6 +98,11 @@ config:
         enabled: false
         endpoint: "" # If specified, rustfs will export profiling data to this endpoint. e.g. "http://localhost:6060/debug/pprof/profile"
 
+extraEnv: [] # This is for setting extra environment variables in the rustfs container. It should be a list of key value pairs. For example:
+# extraEnv:
+#   - name: RUSTFS_EXTRA_ENV
+#     value: "extra_value"
+
 # This section builds out the service account more information can be found here: https://kubernetes.io/docs/concepts/security/service-accounts/
 serviceAccount:
   # Specifies whether a service account should be created