pam_sss: reorder pam_message array
There are different expectations about how the pam_message array is
organized, details can be found in the pam_conv man page. E.g. sudo was
not able to handle the Linux-PAM style but expected the Solaris PAM
style. With this patch both styles should work as expected.
Resolves https://fedorahosted.org/sssd/ticket/2971
Reviewed-by: Pavel Březina <pbrezina@redhat.com>