title: MySQL Fabric add group report User (fabric) does not have appropriate privileges when user have privilege
body: <p><code>group add</code> command throws an error</p>
  
  <pre><code>$ mysqlfabric group add group_id-1 127.0.0.1:70002
  Fabric UUID:  5ca1ab1e-a007-feed-f00d-cab3fe13249e
  Time-To-Live: 1
  </code></pre>
  
  <blockquote>
    <p>ServerError: User (fabric) does not have appropriate privileges (ALL PRIVILEGES) on server (127.0.0.1:70002, 33c14c02-4f
        67-11e4-8df7-00ffb263a4ad).</p>
  </blockquote>
  
  <p>Why does this happen? what privileges does fabric need ?</p>
  
  <p>I run the fabric and mysql server instance on the same machine, the state storage uses <code>localhost:70001</code> mysql instance.</p>
  
  <p>user fabric's privileges on MySQL Instance <code>localhost:70002</code></p>
  
  <pre><code>$ mysql -u root -P70002 -e "show grants for fabric"
  +---------------------------------------------------------------+
  | Grants for fabric@%                                           |
  +---------------------------------------------------------------+
  | GRANT ALL PRIVILEGES ON *.* TO 'fabric'@'%' WITH GRANT OPTION |
  +---------------------------------------------------------------+
  $ mysql -u root -P70002 -e "show grants for fabric@127.0.0.1"
  +-----------------------------------------------------------------------+
  | Grants for fabric@127.0.0.1                                           |
  +-----------------------------------------------------------------------+
  | GRANT ALL PRIVILEGES ON *.* TO 'fabric'@'127.0.0.1' WITH GRANT OPTION |
  | GRANT ALL PRIVILEGES ON `fabric`.* TO 'fabric'@'127.0.0.1'            |
  +-----------------------------------------------------------------------+
  $ mysql -u root -P70002 -e "show grants for fabric@localhost"
  +-----------------------------------------------------------------------+
  | Grants for fabric@localhost                                           |
  +-----------------------------------------------------------------------+
  | GRANT ALL PRIVILEGES ON *.* TO 'fabric'@'localhost' WITH GRANT OPTION |
  | GRANT ALL PRIVILEGES ON `fabric`.* TO 'fabric'@'localhost'            |
  +-----------------------------------------------------------------------+
  </code></pre>