Replace comparisons of "if value" with "if value is not None"
in order to handle 0.
Add a short reference to the man page to indicat that a cert
or request retention time of 0 means remove at the next
execution.
Also indicate that the search time limit is in seconds.
Fixes: https://pagure.io/freeipa/issue/9325
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Francisco Trivino <ftrivino@redhat.com>
Rob Crittenden
20ff7c1602