Fix for name/handling of the group auth secret name helper

[vctrstrm]

Template for group auth secret is misspelled as .Values.auth.groupAuthSecret when it should be .Values.auth.groupsAuthSecret (the value name used in all other templates)

Additionally, since the the value of ".Values.auth.groupsAuthSecret" is meant to be a secret name, I removed truncation/trimming as the name should be taken verbatim

Without this fix, the workaround is to declare duplicate env vars for both:

auth:
  # [BUG WORKAROUND] - template references secret with two different names, hence duplication
  groupAuthSecret: trino-group-auth
  groupsAuthSecret: trino-group-auth
  passwordAuthSecret: trino-password-auth

[cla-bot]

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[vctrstrm]

signed cla submitted 👍