Make import work with farming

This is not so nice, but i couldnt find a nicer solution.
Maybe using a hook, but then that hook would be for a very specific use case

We should look into calling classes directy to perform imports (WikiImporter service)
so that we can get rid of the sub-process

[4.3.x]

ERM33354

Change-Id: I1020f352c04e1e6c5e6e3bf42766784c6d0109d2