git: openjdk/jdk17u: master: 8274205: Handle KDC_ERR_SVC_UNAVAILABLE error code from KDC

[Yuri Nesterenko]

Changeset: 844d8bf8
Author:    Alexey Bakhtin <abakhtin at openjdk.org>
Committer: Yuri Nesterenko <yan at openjdk.org>
Date:      2021-10-21 07:40:33 +0000
URL:       https://git.openjdk.java.net/jdk17u/commit/844d8bf88cbaf9a2b78152f01c568719b2d13fcd

8274205: Handle KDC_ERR_SVC_UNAVAILABLE error code from KDC

Backport-of: 5ba0d09fe47439880daf913f4ff0b978ed9c1ac6

! src/java.security.jgss/share/classes/sun/security/krb5/KdcComm.java
! src/java.security.jgss/share/classes/sun/security/krb5/internal/Krb5.java
+ test/jdk/sun/security/krb5/auto/Unavailable.java