Fix issue with LMOD init clobbering zsh module_path env var.
Fix issue with LMOD init clobbering zsh module_path env var.

MonashBioinformaticsPlatform/bio-ansible,MonashBioinformaticsPlatform/bio-ansible,MonashBioinformaticsPlatform/bio-ansible,MonashBioinformaticsPlatform/bio-ansible,MonashBioinformaticsPlatform/bio-ansible