Title: #153: sss_cache: User/groups invalidation in domain cache
I have one last trivial thing to add -- can you add comment to the new function that is
always writes to the persistent cache and a similar comment to the call of this new
function from the sss_cache tool? I would just like to avoid someone using this function
from the deamon code, not realizing what it does and degrading performance.
See the full comment at https://github.com/SSSD/sssd/pull/153#issuecomment-284663691