Migration from GHES doesn't honor local archive or archive URL

## Description

When the source is GHES , the migrate-repo command doesn't honor the `--git-archive-path' and `--git-archive-url` parameters. Even if they are passed it always tries to export the archive from GHES

## Reproduction Steps

Try to migrate with a local archive (eg: exported with ghe-migrator) and pass it to GEI using
`--git-archive-path` or `--metadata-archive-path` an archived in storage and passed with `--metadata-archive-url` and `--git-archive-url`