IMP-1133: Renew Kerberos ticket-granting-ticket separately
IMP-1133: Renew Kerberos ticket-granting-ticket separately

This patch reverts the kinit command used to refresh both the tgt and
the service ticket to a previous form where the tgt-renewal command is
done separately. It's not clear whether it's ok to specify both -R and
-r to one kinit invocation, but we have seen an unexpected Kerberos
error that seems related.

Change-Id: I0415d8bf4e2fd3ac7b8797bff6f17137aadfb464
Reviewed-on: http://gerrit.ent.cloudera.com:8080/951
Reviewed-by: Henry Robinson <3eca10f30041813f045165784e24b5a950a6cc7e@cloudera.com>
Tested-by: jenkins

cloudera/Impala,cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala