[FLINK-33008] Use KubernetesClient from JOSDK context

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: kubernetes-operator-1.7.0
• Component/s: Kubernetes Operator
• Assignee: Daren Wong
• Reporter: Gyula Fora
• Created: 31/Aug/23 07:10
• Updated: 04/Sep/23 10:44
• Resolved: 04/Sep/23 10:44

Description

We are currently manually creating and passing around the KubernetesClient instances. 

This is now accessible directly from the JOSDK Context, so we should use it from there to simplify the code.