CA-247723: add log trace for error on exclusive open to track reason.
CA-247723: add log trace for error on exclusive open to track reason.

Signed-off-by: Mark Syms <655512b2a8f1aba6e4085462b623575da824f038@citrix.com>
Reviewed-by: Stefano Panella <e1ed83fdabd8cb12bfc02b8141515b791627b7e3@citrix.com>
Reviewed-by: Chandrika Srinivasan <51ae5eeda27fe08017d2d63c87755f0707891830@citrix.com>

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