[SSSD] [sssd PR#5251][comment] subdomains: allow to inherit case_sensitive=Preserving

[pbrezina]

URL: https://github.com/SSSD/sssd/pull/5251
Title: #5251: subdomains: allow to inherit case_sensitive=Preserving

pbrezina commented:
"""
See updated patches. I added `s2n_response_to_attrs_fqname()` that return lowercased name for oldest protocol version which can use winbind underneath. Newer protocols use ipa server mode which returns lowercased name (without these patches) and original name (with these patches applied on the server side). `case_sensitive=Preserving` now works for AD provider as well as IPA provider without the need to set anything on the server side. SSSD needs to be updated on the server side as well though.
"""

See the full comment at https://github.com/SSSD/sssd/pull/5251#issuecomment-726036219