[to #556] slowlog: attach cluster_id and pd_addresses to slow log properties (#557)

[ti-srebot]

cherry-pick #557 to release-3.2
You can switch your code base to this Pull Request by using git-extras:

# In client-java repo:
git pr https://github.com/tikv/client-java/pull/560

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/client-java.git pr/560:release-3.2-d354ffc99aa0

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Signed-off-by: iosmanthus myosmanthustree@gmail.com

What problem does this PR solve?

Issue Number: to #556

Problem Description:
Attach cluster_id and pd_addresses to slow log to distinguish the request destination while handling multiple TiKV clusters.

What is changed and how does it work?

Add withFields for SlowLogImpl, and use this interface to attach info dynamically while constructing the slow logger.

Code changes

• Has exported function/method change

Check List for Tests

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

• Unit test

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation
• Need to be included in the release note

[ti-srebot]

/run-all-tests

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-3.2@a72e550). Click here to learn what that means.
The diff coverage is n/a.

@@              Coverage Diff               @@
##             release-3.2     #560   +/-   ##
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  Coverage               ?   31.06%           
  Complexity             ?     1297           
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  Files                  ?      279           
  Lines                  ?    17371           
  Branches               ?     1980           
==============================================
  Hits                   ?     5397           
  Misses                 ?    11394           
  Partials               ?      580           

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[zz-jason]

LGTM