Session supports specifying a pythonpath?

[jarviszeng-zjc]

When we use computing op, want to set pythonpath, because the func may be come from different package

[maxwong]

Will support in the next release. Assigning to @itboyljm

[dylan-fan]

Do you have a specific time? We hope by the end of August. This feature is required for FATE 1.7 release