Use the unparsed args in export_variables_to_bazel (#2467)
Use the unparsed args in export_variables_to_bazel (#2467)

This allows properly passing arguments (i.e. YEAR) without them ending
up in the bazel file as (likely empty) variables.
googleapis/google-cloud-cpp,googleapis/google-cloud-cpp,googleapis/google-cloud-cpp,googleapis/google-cloud-cpp