title: Mapping a sql view to a php entity with doctrine2
body: <p>I have a view in my database created with </p>
  
  <pre><code>CREATE VIEW TBL_TITLE (...)
  </code></pre>
  
  <p>That view is described in yaml by</p>
  
  <pre><code>HQ\Title:
    type: entity
    table: TBL_TITLE
    fields:
      (...)
    lifecycleCallbacks: {  }
  </code></pre>
  
  <p>This works fine: my entities are loaded and written correctly. But when I run <code>orm:schema-tool:update</code>, I get</p>
  
  <pre><code>CREATE TABLE TBL_TITLE (...);
  </code></pre>
  
  <p>So doctrine2 (2.1.6) doesn't see that <code>TBL_TITLE</code> already exists as a view and wants to create a table. How can I declare <code>TBL_TITLE</code> as a view so that schema-tool recognize it?</p>