Keep zip files in Git-LFS mode

Author: dmitrygolovkin

.gitattributes

@@ -23,3 +23,4 @@ imagenet_test_images filter=lfs diff=lfs merge=lfs -text eol=lf
 *.ckpt.data-00000-of-00001 filter=lfs diff=lfs merge=lfs -text eol=lf
 *.pb filter=lfs diff=lfs merge=lfs -text eol=lf
 *.npy filter=lfs diff=lfs merge=lfs -text eol=lf
+*.zip filter=lfs diff=lfs merge=lfs -text eol=lf