common/pick_address: Add IPv6 support to is_addr_in_subnet

common/pick_address: Add IPv6 support to is_addr_in_subnet

Updated the is_addr_in_subnet function to work with both
IPv4 and IPv6 addresses. Previously, it only supported IPv4,
which caused failures when IPv6 addresses were passed in.

Changes:
 - Use inet_pton to detect IPv4 (AF_INET) or IPv6 (AF_INET6).
 - Added sockaddr_in6 for IPv6 handling while keeping sockaddr_in for IPv4.
 - Adjust the family and ifa_addr dynamically based on the address type.

Fixes: https://tracker.ceph.com/issues/67517
Signed-off-by: Nitzan Mordechai <nmordech@redhat.com>
(cherry picked from commit d68857c1e57e93a68d9301b3beff7e652f327a9e)