Adding more access log metrics into k8s dashboards

[mrproliu]

1. Adding HTTP metrics into the Kubernetes services table
   

2. Adding HTTP metrics into the Kubernetes pods table
   

3. Adding service topology into the Kubernetes service tab
   

Because the UI templates changes already existing in the CHANGES.md, so no needs to be update.

• If this pull request closes/resolves/fixes an existing issue, replace the issue number. Closes #.
• Update the CHANGES log.

[wu-sheng]

Adding service topology into the Kubernetes service tab

Could you sort the tabs in a better way?

1. Overview
2. Topology
3. TCP
4. HTTP
5. Pods
6. Endpoint
7. Profiling

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I think you should update change logs as well?

[wu-sheng]

@mrproliu Please update the showcase and demo, let's bring this to the pages.