r/samba-dc: sysvolsync: Remove winbind cache file

The `net cache flush` command does not seem to always work to clear the
identity mapping cache used by winbind.  Explicitly moving the file
does, though.

roles/samba-dc/files/sysvolsync.sh

@@ -3,6 +3,7 @@
 
 SYSVOL=/var/lib/samba/sysvol
 IDMAP_LDB=/var/lib/samba/private/idmap.ldb
+WINBIND_CACHE=/var/lib/samba/winbind_cache.tdb
 
 case "${DEBUG}" in
 yes|YES|y|Y|on|ON|1|true|TRUE|t|T)
@@ -71,6 +72,7 @@ if [ -z "${st_cur}" ] || [ "${st_new}" != "${st_cur}" ]; then
     mv "${IDMAP_LDB}.new" "${IDMAP_LDB}"
     info 'Flushing idmap cache'
     net cache flush
+    rm -f "${WINBIND_CACHE}"
     info 'Restarting Samba service'
     systemctl start samba || exit
     info 'Resetting SYSVOL ACLs'