[SCANNER] Slave State in Common Status Block shall be independent of current Bus State

Currently, in case the stack is in Bus state OFF state, ulSlaveState in the Common Status Block is set to 0 (HIL_SLAVE_STATE_OK) independent of whether or not there are slaves configured.

The slave state shall be independent of the bus state.
This is what the DMP Manual (Rev 17) defines:

If there is at least one slave missing or one of the slaves has pending diagnostic information, the status is changed to HIL_SLAVE_STATE_FAILED.

Therefore, the slave state shall behave as follows:

if (ulNumOfConfigSlaves == 0 and ulNumOfActiveSlaves == 0 and ulNumOfDiagSlaves == 0)
{
  ulSlaveState = HIL_SLAVE_STATE_UNDEFINED
}
else if (ulNumOfDiagSlaves != 0)
{
  ulSlaveState = HIL_SLAVE_STATE_FAILED
}
else if (ulNumOfConfigSlaves != ulNumOfActiveSlaves)
{
  ulSlaveState = HIL_SLAVE_STATE_FAILED
}
else
{
  ulSlaveState = HIL_SLAVE_STATE_OK
}