cache_req: add object by id
This request returns either user or group object.
Resolves:
https://fedorahosted.org/sssd/ticket/3151
Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>
(cherry picked from commit 3be2628d8aba6aeb99ac1484da990f1fad8169ec)
Only sysdb changes were cherry picked from previous commit