Motivation:
Review code styles with some bots automatically.
Modifications:
Set up ReviewDog in GitHub Action to review code style.
Add more check rules to checkstyle plugin.
Result:
Obvious code styles can be reviewed and commented automatically.
### Motivation:
Make E2E tests more stable.
### Modifications:
Verify the traces loosely as other tests, and remove the `verify` method which verifies traces strictly, as we have preparation that also generates traces.
### Result:
E2E tests are more stable.
Jared Tan
kezhenxu94