winbindd: Use idmap cache in xids2sids
Typically smbd should have looked into the idmap cache itself before
contacting winbind. But winbind has internal users of this API (getpwuid
and getgrgid for example), and those need to use the cache too.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12484
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Wed Dec 28 00:06:41 CET 2016 on sn-devel-144