title: Java8 DateTimeFormatter parse date with both single digit and double digit day
body: <p>I'm using <code>DateTimeFormatter</code> to parse a date:</p>
  
  <pre><code>private final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd/MM/yyyy");
  LocalDate.parse("05/12/2015", parser); // it's ok
  LocalDate.parse("5/12/2015", parser); // Exception
  </code></pre>
  
  <p>Unfortunately it doesn't parse correctly dates with a single day digit, like <code>"5/12/2015"</code>.</p>
  
  <p>I read some other post as <a href="https://stackoverflow.com/questions/27571377/datetimeformatter-support-for-single-digit-day-of-month-and-month-of-year">this</a> but the proposed solution doesn't work for me.
  I need a way to parse dates that can have single or double digits day.</p>