improve test_sim_gaia_import_export

[rigelrozanski]

Couple things we ought to improve upon:

• Based on our historical experiences, we should always avoid using scripts whenever possible for maintainability, In this situation, I think we could easily replicate the functionality of scripts/import-export-sim.sh in golang and therefor should
• Also we should provide better output when a test fails here as to the exact command to run in order to replicate the error... right now we just say seed XX failed! when it would be good to say " run the following command: _____________________

CC @cwgoes

[cwgoes]

At the moment I think we can't do it in Golang, too many of our libraries are not Goroutine-safe. I have tried this in the past with parallel simulations and needed to switch to bash scripts for that reason.

Agreed on better output.

[rigelrozanski]

hmmm - we should document that information maybe in a readme.md in scripts/