[to #48] Create actions for CDC

[pingyu]

Signed-off-by: pingyu [email protected]

What problem does this PR solve?

Issue Number: to #48

Problem Description: TiKV CDC Development

What is changed and how does it work?

• Create Github actions for CDC. (Refer to https://github.com/PingCAP-QE/devops-config/blob/main/tikv-migration/tikv-migration-verify-pipeline.yaml)
• Remove failed test case of sorter, which is removed by [to #48] modify TiDB CDC to TiKV CDC #74
• Remove failed test case move_table, which is unnecessary for RawKV.
• Prolong timeout in clientSuite.TestRegionWorkerExitWhenIsIdle to make CI stable.
• Other tiny fixes.

Code changes

• Has exported function/method change
  No.
• Has exported variable/fields change
  No.
• Has interface methods change
  No.

Check List for Tests

This PR has been tested by at least one of the following methods:

• Unit test

Side effects

No.

[codecov]

Codecov Report

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@@            Coverage Diff            @@
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Flag	Coverage Δ
cdc	53.3132% <0.0000%> (?)

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[pingyu]

PTAL~ @zz-jason @zeminzhou

[zz-jason]

LGTM