Double retries for rspec-retries
What does this MR do?
In https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/26934 we reduced retries from 2 * 4 to 1 * 2, which is causing unstable pipelines for us even after we quarantined fast.
This raises the retries from 1 * 2 to 1 * 4, which is doubling retries but still half from where it was.