Remove assumption in test about presence of a git config
Remove assumption in test about presence of a git config

The tests listed below run git commit which fails when a git config does not provide user.email.

+ test/test-ghe-backup-repositories-rsync.sh
+ test/test-ghe-restore.sh
+ test/test-ghe-backup.sh

Teino1978-Corp/https-github.com-Teino1978-Corp-backup-utils,github/backup-utils,github/backup-utils,spotify/backup-utils