v1.9.0

All changes

• Load AWS config and assume role(#168, @luisdavim)
• Updated example VSL/VSL to include credentialsFile/enableSharedConfig (#173, @sseago)
• Update backupstoragelocation.md SSE-C (#176, @MrOffline77)
• Bump up to aws-sdk-go-v2 (#177, @reasonerjt)
• Add aws tags to objects in s3 (#182, @reasonerjt)