change ImagefolderDV2 name
change ds.transforms.vision to ds.vision
change batch api to match map api more closely
compose op changes
test_pylint
remove compose op from vision, move to transform module, refactor map and batch to use column_order
I added a SummaryCollector to help users automatically collect information
such as the network, loss, learning rate and so on, making it easier to collect this information.
It also can collect train lineage and eval lineage information which is
collected by TrainLineage Callback and EvalLineage Callback in
MindInsight.
I also add some UT for SummaryCollect to keep the code correct.