Local mounting works for handling backups, ensure that s3 is mounted as well.

[vjeeva]

Probably will need to the following architecture.

When fetching a backup, it creates a temp dir on the tester container and stores the file there. Need to copy this into a mounted directory on the HOST MACHINE then mount the same location to the engine container.

Basically right now the postgres driver will fail using s3 due to this, but we NEED this anyways.