Import to Git using az datafactory factory configure-factory-repo

### datafactory Extension

### Description of issue
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I'm using ```az datafactory factory configure-factory-repo``` to add VSTS to a Data Factory. If I use the UI, there is an option to automatically import all existing Data Factory objects (pipelines etc.) to Git. As far as I can tell, the command line version doesn't have that option.

That means that if I add a repo with Azure CLI, the repo will be out of sync with the DF. The ADF UI editor will look at git and think the DF is empty even though all objects exist in the environment.

Am I missing something? Should there be a flag to trigger import?