[BUG][MD] Cypress tests for multiple datasource are failing

[abbyhu2000]

Describe the bug
Currently the cypress tests for multiple datasource are failing.

I think the default schema config value for multiple datasource is false, so MD is not enabled when cypress tests are trying to run. https://github.com/opensearch-project/OpenSearch-Dashboards/blob/main/src/plugins/data_source/config.ts#L15

[zhongnansu]

@abbyhu2000 By requirement, we shouldn't enable datasource by default in osd.yml. But in the cypress workflow, we are using the default config in functional test repo cypress.json to decide which test to run. Datasource test flag is enabled in cypress.json, but data source feature is not enabled when spinning up the test server in cypress_test_workflow. We have below options to fix this issue.

1. In functional test repo, revert the cypress.json change in this PR, to mark data source test flag to be false. This will lead to the workflow in functional test repo to never run data source feature related tests.
2. In OSD repo -> cypress workflow, set env viable CYPRESS_ DATASOURCE_MANAGEMENT_ENABLED to false, which will not trigger actual datasource functional test to run. Disable datasource from cypress test workflow #3845
3. In OSD repo -> cypress workflow, find a way to enable plugins when spinning up the test server, similar to what functional test repo is doing here. https://github.com/opensearch-project/opensearch-dashboards-functional-test/blob/7ec51edeacd911c6166e93a5edcfd2524ce1db0d/.github/workflows/cypress-workflow-bundle-snapshot-based.yml#L28

Not sure how much effort for option 3, which seems to be a long term solution. But to mitigate the issue, I'd suggest we go with option 1.

[joshuarrrr]

I think we do something similar for visbuilder? It's experimental, so disabled by default in OSD, but it should always be enabled in the test server for the purpose of testing.

[zhongnansu]

@joshuarrrr visbuilder is actually enabled by default in its config.ts.

[zhongnansu]

@joshuarrrr As my option 3 explains, test server in OSD cypress flow doesn't seem to provide option to enable/disable a osd setting, correct me if I'm wrong

[zhongnansu]

PR opened in function test repo opensearch-project/opensearch-dashboards-functional-test#613

[zhongnansu]

cypress passes now https://github.com/opensearch-project/OpenSearch-Dashboards/actions/runs/4694010639/jobs/8339937917