fix logging for pre update routing

[JiaoMaWHU]

Summary

• fix logging for pre update in BaseLocalDao
• explicitly initialize _restliPreUpdateAspectRegistry as null in start time

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Docs related to the changes have been added/updated (if applicable)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.54%. Comparing base (af454f2) to head (19be6e6).

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #427   +/-   ##
=========================================
  Coverage     67.53%   67.54%           
  Complexity     1519     1519           
=========================================
  Files           137      137           
  Lines          5958     5959    +1     
  Branches        644      644           
=========================================
+ Hits           4024     4025    +1     
  Misses         1662     1662           
  Partials        272      272           

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[rakhiagr]

Thank you for fixing these.