sss_cache: Fail if unknown domain is passed in parameter
If sss_cache is called with --domain parameter we should fail
in case of unknown domain. It might be a typo and user should know
about such case.
Resolves:
https://pagure.io/SSSD/sssd/issue/3919
Merges: https://pagure.io/SSSD/sssd/pull-request/3940
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>
(cherry picked from commit 2de3c5fb2490da0dabed0de498a8296db85a1e61)