Sanity-check S3 config before starting mover
Sanity-check S3 config before starting mover

Fail early with bad configs rather than waiting for HSM
actions to fail mysteriously.

intel-hpdd/lemur,intel-hpdd/lemur,intel-hpdd/lemur,intel-hpdd/lemur,intel-hpdd/lemur,intel-hpdd/lemur