Revert default password to root

[jt2594838]

No description provided.

[sonarqubecloud]

Quality Gate failed

Failed conditions
6.8% Duplication on New Code (required ≤ 5%)

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 38.92%. Comparing base (1d0b33e) to head (8d98382).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...g/apache/iotdb/tool/tsfile/AbstractTsFileTool.java	0.00%	1 Missing ⚠️
...he/iotdb/tool/tsfile/subscription/CommonParam.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #16060   +/-   ##
=========================================
  Coverage     38.92%   38.92%           
  Complexity      198      198           
=========================================
  Files          4876     4876           
  Lines        317406   317406           
  Branches      40016    40016           
=========================================
+ Hits         123541   123556   +15     
+ Misses       193865   193850   -15     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.