Added unused claim_group back as an 'ignored value'. Need to add a note about...

Added unused claim_group back as an 'ignored value'. Need to add a note about the role mapping in the chart repo.

chart/google-auth-example-values.yaml

@@ -37,4 +37,5 @@ logging:
     # required for keycloak - should be empty for google)
     signature_algorithm: "-"
     endsession_url: "-"
+    claims_group: "-"
     claims_mail: "-"
\ No newline at end of file