fix: Update default database to PostgreSQL in v4

[lindseysimple]

Resolves #4980. Update default database, msg bus, config provider and registry host. Remove support-scheduler code.

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 29.35%. Comparing base (ead5599) to head (b91dd63).

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4981      +/-   ##
==========================================
- Coverage   30.74%   29.35%   -1.39%     
==========================================
  Files         266      249      -17     
  Lines       19680    18676    -1004     
==========================================
- Hits         6051     5483     -568     
+ Misses      12295    11948     -347     
+ Partials     1334     1245      -89     

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[cloudxxx8]

modify the configuration file of support-cron-scheduler to use the commom config database setting.
it doesn't need to use its own anymore

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[cloudxxx8]

LGTM