Description:
------------
The authentication methods SCRAM-SHA-1 and SCRAM-SHA-256 have to be supported, this issue is about adding support for them in mysqlnd.

Test script:
---------------
<?php
$link = mysqli_connect("127.0.0.1", "user", "pass");
 
// Check connection
if($link === false){
    die("ERROR: Could not connect. " . mysqli_connect_error());
}
 
// Print host information
echo "Connect Successfully. Host info: " . mysqli_get_host_info($link) . PHP_EOL;

if ($result = $link->query("SHOW DATABASES")) {
  echo "Returned rows are: " . $result->num_rows . PHP_EOL;
  // Free the result set
  $result->free_result();
}

?>

Expected result:
----------------
Given the script and assuming that 127.0.0.1 runs a mysql server configured with LDAP SASL and auth method SCRAM-SHA-1 or SCRAM-SHA-256 for the user "user", the script succeeds and the query works.

Actual result:
--------------
The connection will fail since mysqlnd is not able to authenticate, at the moment LDAP SASL is not supported in the client but the server does support those methods.