v.3.9.8

Improvements:

1. [LUNA-6321] Added GET and HEAD methods for /buckets/<bucketName>/ resource

   GET method returns JSON with creation_time string field

   See get bucket, head bucket operations

2. [LUNA-6325] A field bucket was removed from the S3 setting.

Migration:

See a migration manual.

[LUNA-6321] See a migration manual.

[LUNA-6325] See a migration manual.