fix 1056: nslcmop.operationState not updated when it is cancelled

When a task in queue is cancelled (because a terminate is received),
task operationState remains at PROCESSING instead of FAILED
This avoids terminate task to start

Change-Id: I2af59723832669f8ca8a3fbbffbdddcff8be2486
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>