client-java-api-fluent-xx.y.z-sources does not have license information

[CsatariGergely]

Describe the bug
The published source jar does not have any license information.

Client Version
Not relevant

Kubernetes Version
Not relevant

Java Version
Not relevant

To Reproduce
Download the published source jar and check the manifest file or any source files

Expected behavior

• Source files have license and copyright information in their header
• Manifest file contains license information.

KubeConfig
Not relevant

Server (please complete the following information):
Not relevant

Additional context
N/A