RFR: 8258855: Two tests sun/security/krb5/auto/ReplayCacheTestProc.java and ReplayCacheTestProcWithMD5.java failed on OL8.3 [v3]

[Fernando Guallini]

> Kerberos new replay cache format released in 1.18 (installed in OL8.3) is causing the tests failures:
> `https://web.mit.edu/kerberos/www/krb5-latest/doc/formats/rcache_file_format.html`
> 
> New and old format are not compatible, that means they cannot share a rcache file. Since there is no interoperability between java GSS-API and native GSS-API new rcache format at the moment, this patch only enables the test scenarios that mimic AP-REQ replays with multiple processes using native GSS-API only (when available) and multiple processes using Java own implementation API only. 
> 
> If there is a decision to support the new format in the future, tests will be revisited accordingly.

Fernando Guallini has updated the pull request incrementally with one additional commit since the last revision:

  add comment when scenario is skipped

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/2676/files
  - new: https://git.openjdk.java.net/jdk/pull/2676/files/142b151b..d153db17

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2676&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2676&range=01-02

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2676.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2676/head:pull/2676

PR: https://git.openjdk.java.net/jdk/pull/2676