IFP: Use sized_domain_name to format the groups the user is a member of
    
    Resolves:
        https://pagure.io/SSSD/sssd/issue/3268
    
    Uses the common function sized_domain_name() to format a group the user
    is a member of to the appropriate format.
    
    To see the code is working correctly, run:
            dbus-send --system --print-reply --dest=org.freedesktop.sssd.infopipe
                      /org/freedesktop/sssd/infopipe
                      org.freedesktop.sssd.infopipe.GetUserGroups
                      string:trusted_user
    
    Where trusted_user is a user from a trusted domain that is a member of groups
    from the joined domain and a trusted domain as well. The groups from the
    joined domain should not be qualified, the groups from the trusted
    domain should be qualified.
    
    Reviewed-by: Pavel Březina <pbrezina@redhat.com>
    Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>
    (cherry picked from commit c9a73bb6ffa010ef206896a0d1c2801bc056fa45)