Add browser performance tests
What does this MR do and why?
Implement GitLab-CI Browser performance testing : https://docs.gitlab.com/ee/ci/testing/browser_performance_testing.html
MR acceptance checklist
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My code follows the style guidelines of this project -
I ran pylint and other linters for modified files -
I have performed a self-review of my own code and tested it -
I have commented my code, particularly in hard-to-understand areas -
My changes generate no new warnings -
My code needed automated testing. I have added them (this is optional task) -
I have added user readable comment in the CHANGELOG
Edited by Guillaume MARTINEZ