[FLINK-26928] Remove unnecessary Docker network creation in Kafka connector tests

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.15.0, 1.16.0
• Fix Version/s: 1.15.0, 1.16.0
• Component/s: Connectors / Kafka
• Labels: pull-request-available
• Assignee: Qingsheng Ren
• Reporter: Qingsheng Ren
• Created: 30/Mar/22 09:23
• Updated: 01/Apr/22 07:58
• Resolved: 01/Apr/22 07:58

Description

Currently each Kafka test class will create a Docker network, which could flush the network usage on Docker host, and test would fail if all IP address in the pool of Docker are occupied. 

Issue Links

• links to: GitHub Pull Request #19282