mrp migration script is incomplete

[arthru]

Mrp post migration script is incomplete with missing lines : https://github.com/OpenUpgrade/OpenUpgrade/pull/63/files#diff-42f221718256b2641dc5ed5e21576f9bR11

@gurneyalex did you forget to send changes ?

[arthru]

The PR bringing that is #63

[StefanRijnhart]

Closing this as per last comment

[gurneyalex]

It is a partial migration of stuff which moved from product to mrp.

Don't tackle mrp until procurement and stock are migrated.

[StefanRijnhart]

Sure, we just fixed the syntax error to make pep-bot happy.