create random projects and bug fixes

Script ot create new random projects form M.Kaller (it uses absolute paths to a2001002) fix a bug causing failure due to assumption of flowcell id formatting 
ha! we should have discuss this before [we both wrote it](https://github.com/NationalGenomicsInfrastructure/ngi_pipeline/blob/devel/ngi_pipeline/tests/generate_test_data.py#L151)