Add some useful additional printer columns for TidbMonitor

[cofyc]

Feature Request

Is your feature request related to a problem? Please describe:

Now it uses the default columns.

$ kubectl get tidbmonitor
NAME    AGE
basic   23s

Describe the feature you'd like:

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy:

[cofyc]

@mikechengwei
in production, what information is useful and should be printed?

[mikechengwei]

TidbMonitor have grafana ,prometheus,reloader and additional container. Do we need to show their status like TidbCluster?

NAME                PD                                              STORAGE   READY   DESIRE   TIKV                                              STORAGE   READY   DESIRE   TIDB   READY   DESIRE

But tidbmonitor is running in a pod with multiple containers, user can describe pod to get information which they want.

[cofyc]

maybe we can show their running status? then we can quickly check if components have problems or not

[mikechengwei]

Do you mean ready and desire info? Tidbmonitor is running in a pod with multiple containers, i think we can't use ready and desire columns. We can use ready column the same as in pod columns.

[mikechengwei]

We can inherit tidbmonitor pod info. READY , STATUS and RESTARTS columns . What do you think?

[cofyc]

I think it will be useful.

[mikechengwei]

Ok, i can do it and do it well soon.

[cofyc]

thanks! for users who do not know technical details, they may check the status TidbMonitor to see if the monitor is ready or not. I guess it will be useful if we can print more information by default.

[github-actions]

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