[krbdev.mit.edu #7727] git commit

[Tom Yu via RT]

Discuss cert expiry, no-key princs in PKINIT docs

In pkinit.rst, add "-days" options to the example commands for
creating certificate and briefly discuss the issue of expiration dates
so that the administrator thinks about it.  In troubleshoot.rst, add
an entry for the "certificate has expired" error which results from
PKINIT (when linked with OpenSSL) when a certificate has expired.

(cherry picked from commit f3977b6883f0172a2af9006522a1b35546f86749)

https://github.com/krb5/krb5/commit/6d46afa0ea1283b7b85d1f0075ff274fa15aae60
Author: Greg Hudson <ghudson at mit.edu>
Committer: Tom Yu <tlyu at mit.edu>
Commit: 6d46afa0ea1283b7b85d1f0075ff274fa15aae60
Branch: krb5-1.11
 doc/admin/pkinit.rst       |   32 ++++++++++++++++++++++++++------
 doc/admin/troubleshoot.rst |   20 ++++++++++++++++++++
 2 files changed, 46 insertions(+), 6 deletions(-)