Fix open S3Object InputStream

[herdt-michael]

Open S3Object InputStream when creating an instance of S3Artifact to make it reusable and prevent a wrong usage because of an unused open InputStream.

Signed-off-by: Michael Herdt [email protected]

[bogdan-bondar]

@hawkbit-bot verify please

[hawkbit-bot]

SonarQube analysis reported 3 issues

• 3 minor

Watch the comments in this conversation to review them.

[bogdan-bondar]

Frankly speaking I believe that proposed changes make the code less understandable with S3Artifact being mutable and used in different context (e.g. exists() is a duplicate of existsByTenantAndSha1() but used in different context). We need to define more strict borders of responsibility between S3Artifact and S3Repository.