Reduce verbosity of getting minio

What does this Merge Request do?

Getting minio lacked quiet flag. I've changed curl to wget as well, to keep follow same pattern.

Merge Request checklist

• Tests added for new functionality. If not, please raise Issue to follow-up.
• This change is backward compatible. If not, please include steps to communicate to our users.
• Documentation added/updated, if needed.
• gdk doctor test added, if needed.

Closes #868 (closed)

platformvagrant