Added support for retry options

The DoctrineMongoODMModule does not support the `retryConnect` and `retryQuery` options, which are supported by the `\Doctrine\MongoDB\Configuration` class upon which `Doctrine\ODM\MongoDB\Configuration` is based.

This PR makes it possible to set the `retryConnect` and `retryQuery` options in one's module configuration:

```php
array(
    'doctrine' => array(
        'configuration' => array(
            'odm_default' => array(
                'retryConnect' => 3,
                'retryQuery' => 2
            )
        )
    )
```