Cleanup - Part 2 - isDebugEnabled() related

[desaikomal]

Xiaoyuan has a pending change related to code-cleanup: https://github.com/apache/helix/pull/2470/files

Issues

• My PR addresses the following Helix issues and references them in the PR description:
  Fixes No need to do isDebugEnabled check in slf4j.Logger. #1521

Description

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  This is part2 - remaining files.
  Xiaoyuan has a change out for review:
  code clean up - debug log format #2470

This is cleaning up the remaining files.

(Write a concise description including what, why, how)

Tests

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  Testing done:
  mvn -q test is in-progress.

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Documentation (Optional)

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Commits

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Code Quality

• My diff has been formatted using helix-style.xml
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[qqu0127]

I think even with SLFJ API, we still need to avoid string concatenation in the log in regard to performance. The internal check won't save us in that case.

[qqu0127]

LGTM, thanks

[desaikomal]

This change has been reviewed and approved by @qqu0127 and @rahulrane50. Thanks for the review.
Commit message: Code cleanup