Add retry for waitForSearch() helper function

[abbyhu2000]

Within the data explorer tests, waitForSearch() is waiting for the discover table docTable to finish loading. However, sometimes the doc table takes too long to load, and will cause this function to fail.

For some of the flaky tests, we can add try and catch block for waitForSearch() and if it fails, try reloading the table; and if that fails again, throw an error.

[ruanyl]

Hi @abbyhu2000 could you provide a bit more details about the flaky test? like the test file name and test cases. And do you plan to fix it in the coming release?

[abbyhu2000]

@ruanyl The flaky tests are these: opensearch-project/OpenSearch-Dashboards#5495. After discussing with team, we decided to skip those flaky tests. I think we can close this issue.

[ruanyl]

@abbyhu2000 Thanks for the update, looks like you're tracking the flaky test in OSD repo, then I'll close this issue now :)