title: ORMLite change allowGeneratedIdInsert in onUpgrade
body: <p>I'm using ORMLite in my app.
  I had to enable the <code>allowGeneratedIdInsert</code> flag for one of my fields (rows) of a class (table). I did this through annotations.</p>
  
  <p>Now i also need to do this for users which will update the app. This means I need to increment the database version and do the same in my <code>onUpgrade</code> method.</p>
  
  <p>Is there an easy way of doing this? Or do I have to copy my data, drop the table and then recreate it using <code>TableUtils</code>?</p>