create_build-env.sh missing for golang usecase.

Created by: clarsonneur

Related to forj-oss/forjj#207, a source to build-env.sh report an error in order to run create_build-env.sh which doesn't exist.

The issue is related to https://github.com/forj-oss/build-env/blob/master/lib/build-env.fcts.sh#L53 which is referring to GO in generic shell code.

Need to be fixed.