title: Can not login to mysql 5.7.9 after change password
body: <p>I have installed Mysql <strong>Ver 14.14 Distrib 5.7.9, for Linux (x86_64) using  EditLine wrapper</strong> On <strong>CentOS Linux release 7.1.1503</strong></p>
  
  <p>I Changed root password using this command:  </p>
  
  <pre><code>alter user 'root'@'localhost' identified by 'XXXXXXX';  
  flush privileges;
  </code></pre>
  
  <p>After re-login </p>
  
  <pre><code>[root@server ~]# mysql -u root -p
  Enter password: 
  </code></pre>
  
  <blockquote>
    <p>ERROR 1524 (HY000): Plugin
    '*A6074285732753D325C55AD74E7517CF442C1A81' is not loaded</p>
  </blockquote>