[BUG] VisualReportHelper unit test is failing

[zhongnansu]

Describe the bug
visualReportsHelper unit test is failing because we are using elastic demo url in unit test for reporting module to access and gernerate report.

Recently they change the html identifier from "#dashboardsViewport" to ".dashboardViewport".

Solution:
We should remove this dependency on elastic. Using a html locally and let pupeeter renders it is a better option

reference: https://stackoverflow.com/questions/65417870/how-to-mock-remote-website-responses-to-unit-test-puppeteer-code-with-jest

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