Add a flag to enable SqueezeNet based image classification model.
Add a flag to enable SqueezeNet based image classification model.

Change-Id: I8f5206e5fbd5022e56230ad4775cc87e220f53ee

google/aiyprojects-raspbian,google/aiyprojects-raspbian,google/aiyprojects-raspbian,google/aiyprojects-raspbian,google/aiyprojects-raspbian