Title: #448: common: Correction of cache_req debug string ID format
This is not fixed. Although it seems nitpicking to me as gid_t, uid_t
and id_t as all of those ended up being defined as u32 type anyways ... all of those
should use PRIu32 in order to address @lslebodn's comment.
It is not nitpick. Some platform have 64 bit id_t. Therefore we have custom string formats
`gid_t`, `uid_t` and `id_t` And you should not use PRIu32 for formatting 64 bit
Therefore we need to use the format string which is tight to type (uint32_t) in this case.
See the full comment at https://github.com/SSSD/sssd/pull/448#issuecomment-344883786