Title: #390: NSS: Add option to disable memcache
@pbrezina Thank you for the comments. If the cache is disabled centrally using the
use_memcache option, client applications can not use it regardless of SSS_NSS_USE_MEMCACHE
env variable. If the memcache is enabled on SSSD side, then the client applications can
use SSS_NSS_USE_MEMCACHE=NO to override it.
I added one sentence to the description to make it more clear. Tell me if it is enough.
See the full comment at https://github.com/SSSD/sssd/pull/390#issuecomment-331406516