[UMBRELLA] Revamp CI bot

Improvement ideas
* it should periodically scan GH issues and auto close upon some condition (e.g. “block on user” and no response from last comment in 30 days)
* it should help auto close or follow up on JIRAs upon some condition (yet to define)
* PR test build is a pull model by periodic scanning PRs; better to use a push model to react to PR updates immediately like to trigger a build. Reduce a few min wait time
* for every new commit, it should append a comment show new report “pending”; it should also update the same comment to show report results once build is done
* a new commit or a force push should cancel previous build job and start a new job
* users don’t need to use {{@hudi-bot run azure}}
* it can also report back codecov reports once integrate with codecov in the mirror repo

## JIRA info

- Link: https://issues.apache.org/jira/browse/HUDI-2575
- Type: Epic
- Fix version(s):
- 1.1.0

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## Comments

18/Oct/21 15:50;xushiyan;from [~codope]
{quote}c) Apart from what you have already listed, may I also suggest a [cc-bot|https://github.com/pytorch/pytorch/issues/24422] by which not just PMC/committers but anyone in the community interested in following some story gets tagged on the issue automatically.

PyTorch is a really big open source project. I found the following two posts a good-read for maintaining such big projects in general.More on principles/philosophy: [https://soumith.ch/posts/2021/02/growing-opensource/]More on scaling operationally: [http://blog.ezyang.com/2021/01/pytorch-open-source-process/]
{quote};;;

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19/Oct/21 14:59;xushiyan;[~shivnarayan] Another point: if Jira components and labels aligned with GH labels (e.g. Jira component "spark" => GH label "c:spark" ) then filing Jira can be automated by the bot too. We can label GH issue with "jira-filing" then bot may just auto-file with all info from the GH issue (labels, title and link);;;