[BP-1.16][FLINK-30881][ci] Replaces optional minikube installation by mandatory removal

[XComp]

1.16 backport PR of parent PR #21834

What is the purpose of the change

The goal is to fix the Minikube version instead of relying on the Minikube version that's provided by the AzureCI Docker image.

Brief change log

• Removes any minikube version that's not matching the required version
• Installs the expected minikube version

Verifying this change

• Normal ci run with k8s tests should pass

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): no
• The public API, i.e., is any changed class annotated with @Public(Evolving): no
• The serializers: no
• The runtime per-record code paths (performance sensitive): no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
• The S3 file system connector: no

Documentation

• Does this pull request introduce a new feature? no
• If yes, how is the feature documented? not applicable

[flinkbot]

CI report:

• 10761b7 Azure: SUCCESS

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[XComp]

@wangyang0918 approved this approach in the 1.15 backport PR #21837