Lowercase constants in template

[meganwolf0]

Environment

Device and OS:
App version:
Kubernetes distro:
Kubernetes version:
provider:

• kyverno
• opa

Steps to reproduce

When a config file contains a constants sub-key that is not all lowercase, and it's referenced in a case-senstive way, the templating render will fail

e.g., lula-config.yaml

constants:
  myKey: some-value

ref.yaml

valueOfMyKey: {{ .const.myKey }}

lula tools template -f ref.yaml

Expected result

valueOfMyKey: some-value

Actual Result

Error: executing "template" at <.const.myKey>: map has no entry for key "myKey"
(because viper converts myKey -> mykey)

Visual Proof (screenshots, videos, text, etc)

Severity/Priority

Additional Context

Associated Viper issue: spf13/viper#1014

[brandtkeller]

Discussed the options for handling case-sensitivity or debugging and error output.