test: Re-enable embedding of assets for acceptance tests

setup.cfg

@@ -4,6 +4,7 @@ addopts = --tb=native -p no:doctest -p no:warnings
 norecursedirs = bin dist docs htmlcov script hooks node_modules .* {args}
 looponfailroots = src tests
 selenium_driver = chrome
+self-contained-html = true
 markers =
     snuba: mark a test as requiring snuba