Feature Request, Grafana dashboard template

[alswl]

Is this a BUG REPORT or FEATURE REQUEST?:

Uncomment only one, leave it on its own line:

/kind bug
/kind feature

What happened:

What you expected to happen:

I want this repo provide an official grafana dashboard template for metrics.

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?: