a8n: Reenable e2e tests
Created by: mrnugget
With the changes made in https://github.com/sourcegraph/sourcegraph/pull/7809, https://github.com/sourcegraph/sourcegraph/pull/7767 and https://github.com/sourcegraph/sourcegraph/pull/7766 I think we should re-enable the e2e tests again.
The longer we skip them, the worse it gets to re-enable them, so let's try sooner rather than later.