[MD] Support local cluster by default

[xinruiba]

Description

When MD enabled, local cluster should be enabled by default

Issues Resolved

#5754

Screenshot

Testing the changes

Tested when

1. data_source.enabled = true
2. data_source.defaultCluster get comment out

We still able to add sample data successfully in local cluster

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (510c759) 66.78% compared to head (d2ce8a6) 66.92%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5811      +/-   ##
==========================================
+ Coverage   66.78%   66.92%   +0.13%     
==========================================
  Files        2591     3302     +711     
  Lines       48749    63505   +14756     
  Branches     8765    10140    +1375     
==========================================
+ Hits        32557    42500    +9943     
- Misses      14054    18540    +4486     
- Partials     2138     2465     +327     

Flag	Coverage Δ
Linux_2	55.11% <ø> (ø)
Linux_3	43.83% <ø> (ø)
Linux_4	?
Windows_1	35.25% <ø> (?)
Windows_3	43.85% <ø> (?)
Windows_4	35.21% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

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

[bandinib-amzn]

Can you be more specific on what part of the issue #5754 this PR cover? I believe it doesn't entirely resolves #5754, right? If you wanna split into smaller tasks, I suggest to create something similar to meta issue

[xinruiba]

Can you be more specific on what part of the issue #5754 this PR cover? I believe it doesn't entirely resolves #5754, right? If you wanna split into smaller tasks, I suggest to create something similar to meta issue

Thanks for the comment.

This change is to enabled local cluster by default when "data_source.enabled = true" and "data_source.defaultCluster" is commented out.

I've update the related info under this task #5696 and we can use it as the meta issue.

Thanks~