CA-274115: Handle RAW VDIs when getting block tracking status
CA-274115: Handle RAW VDIs when getting block tracking status

Whilst trying to retrieve block tracking status of a VDI, return False
if it is a RAW VDI

Signed-off-by: Chandrika Srinivasan <51ae5eeda27fe08017d2d63c87755f0707891830@citrix.com>
Reviewed-by: Mark Syms <655512b2a8f1aba6e4085462b623575da824f038@citrix.com>

xapi-project/sm,xapi-project/sm,chandrikas/sm,chandrikas/sm,chandrikas/sm,xapi-project/sm