Merge pull request #2819 from yuvipanda/an-us-fiux

Don't look for USERNAME_DERIVATION_PEPPER unless necessary

helm-charts/basehub/values.yaml

@@ -768,7 +768,6 @@ jupyterhub:
  import hashlib
  from z2jh import get_config
 
- USERNAME_DERIVATION_PEPPER = bytes.fromhex(os.environ['USERNAME_DERIVATION_PEPPER'])
 
  def salt_username(authenticator, handler, auth_model):
  # Combine parts of user info with different provenances to eliminate
@@ -777,7 +776,7 @@ jupyterhub:
  # FIXME: Provide useful error message when using an auth provider that
  # doesn't give us 'oidc'
  # FIXME: Raise error if this is attempted to be used with anything other than CILogon
-
+ USERNAME_DERIVATION_PEPPER = bytes.fromhex(os.environ['USERNAME_DERIVATION_PEPPER'])
  cilogon_user = auth_model['auth_state']['cilogon_user']
  user_key_parts = {
  # Opaque ID from CILogon