Extend kadmin client timeout to one hour

Retrieving the list of principals can take a long time for some
databases.  Extend the libkadm5 client timeout from two minutes to one
hour.  (We can't easily remove the timeout entirely.)

https://github.com/krb5/krb5/commit/11f0cf7928b239be45c5d3cb7e2eccd2ff1e1bfc
Author: Greg Hudson <ghudson@mit.edu>
Commit: 11f0cf7928b239be45c5d3cb7e2eccd2ff1e1bfc
Branch: master
 src/lib/kadm5/clnt/client_init.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)