Right now the classifier is instantiated before device is attached.
This way if we have any IO-classes present on cache device the
classifier will have no knowledge of them and fail to classify IO
correctly.
After moving the classifier init to cache finalization routine we have
all the information needed to initialize properly both in new instance
start path and in load path.
Signed-off-by: Jan Musial <jan.musial@intel.com>
19c334c4cf