Fix issues with flink application list command

[vsantwana]

Release Notes

Breaking Changes

• PLACEHOLDER

New Features

• Remove Environment from the flink application list command.

Bug Fixes

• Fixes failures in the flink application list command if any of the attributes was null.

Checklist

• Leave this box unchecked if features are not yet available in production

What

In the flink application list --output human command, we did not have null check on the properties we want to show in the application summary command. But this is a valid situation, when application is created, it can have jobName as null till it starts and same for status.

This PR adds check on those attributes.

Note: json and yaml output works fine

The other fix that we want to change in the same command is that we have removed spec.flinkEnvironment from flink application. The changes have to be made to the

• Remove Environment from the confluent flink application list --environment env. The env is already there in the command.
• Since flinkEnvironment will no longer be a part of the response of describe and list applications, it is removed from the test files.

References

Test & Review

[confluent-cla-assistant]

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[sgagniere]

Looks good. Can you add a description under the bug fix section in the PR description?

Our release notes are auto generated from PR descriptions.

[sgagniere]

I think this is a breaking change (environment).