Add supported image formats from driver driver_info

This patch allows to read the field "supported_image_formats" from the
DRIVER_INFO dict. For example you can add:
DRIVER_INFO = {
    ...
    'supported_image_formats': ['qcow2', 'raw', 'vhd']
  }

Signed-off-by: Guillaume <[email protected]>

Author: gthvn1

drivers/util.py

@@ -419,6 +419,8 @@ def sr_get_driver_info(driver_info):
     for option in driver_info['configuration']:
         options.append({'key': option[0], 'description': option[1]})
     results['configuration'] = options
+    # add supported image formats if any 
+    results["supported_image_formats"] = driver_info.get("supported_image_formats", [])
     return xmlrpc.client.dumps((results, ), "", True)