vfs_ceph_new: detect case sensitivity in CephFS

vfs_ceph_new: detect case sensitivity in CephFS

CephFS has recently added support for case insensitive access to the
file system. This modification detects whether the shared volume is case
sensitive or not and reports the FILE_CASE_SENSITIVE_SEARCH capability
accordingly.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15822

Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
Reviewed-by: Anoop C S <anoopcs@redhat.com>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Günther Deschner <gd@samba.org>
Autobuild-Date(master): Tue Mar 11 20:34:26 UTC 2025 on atb-devel-224

(cherry picked from commit a52602030e6ba0e1bcddf5f611464b58076fadd0)