Ensure deployment group directory is created
Ensure deployment group directory is created

Creation of the group level directory was skipped previously, as it was
handled in non-git sources automatically. With git sources, it needs to
be created, so this commit adds that logic before handling modules
directly in copySource.

GoogleCloudPlatform/hpc-toolkit,GoogleCloudPlatform/hpc-toolkit,GoogleCloudPlatform/hpc-toolkit,GoogleCloudPlatform/hpc-toolkit