[SSSD] [sssd PR#5629][+Ready to push] KCM: return KRB5_FCC_INTERNAL for unknown or not implemented operation

[pbrezina]

  URL: https://github.com/SSSD/sssd/pull/5629
Title: #5629: KCM: return KRB5_FCC_INTERNAL for unknown or not implemented operation

Label: +Ready to push