CA-136275: Making the snapshot import instruction execution code more robust to failure.
CA-136275: Making the snapshot import instruction execution code more robust to failure.

Signed-off-by: Rob Dobson <564e7c9301873eb0e5b6866dcaa1b131933d2ed5@citrix.com>

xenserver/xs-cim,xenserver/xs-cim,xenserver/xs-cim,xenserver/xs-cim,xenserver/xs-cim