[BUG] Failed git revision ID in version causes Stream error #493
Description
When streaming objects to file we add the full BioSImSpace revision ID to the stream file metadata. Accessing the revision ID can fail in certain cases, e.g. a janky git install, or file permisisons issues. In this case the revision ID will be None, not the correctly formatted revision string. We modify the string before writing the metadata, which will fail due to an index error if the value is None.