Add %%ml transform subcommand. (#410)
Add %%ml transform subcommand. (#410)

* Add %%ml transform subcommand.

* Add validation of cloud config.

yebrahim/pydatalab,parthea/pydatalab,parthea/pydatalab,craigcitro/pydatalab,googledatalab/pydatalab,craigcitro/pydatalab,yebrahim/pydatalab,googledatalab/pydatalab,parthea/pydatalab,supriyagarg/pydatalab,craigcitro/pydatalab,googledatalab/pydatalab,yebrahim/pydatalab,supriyagarg/pydatalab,supriyagarg/pydatalab