Backed out changeset 326fdac090f3 (bug 1536644) for ESlint failure at browser_actions_BranchedAddonStudyAction.js. CLOSED TREE

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rename : toolkit/components/normandy/test/browser/addons/normandydriver-b-1.0/manifest.json => toolkit/components/normandy/test/browser/addons/normandydriver-1.0/manifest.json
rename : toolkit/components/normandy/test/browser/addons/normandydriver-a-2.0/manifest.json => toolkit/components/normandy/test/browser/addons/normandydriver-2.0/manifest.json