app/experiments/application_experiment.rb: Remove use of MD5 in FIPS mode
Current key_for
creates an MD5 hash here: https://gitlab.com/gitlab-org/gitlab/blob/65836d5fd5e7b01685284803a5692b84a0c267f9/app/experiments/application_experiment.rb#L42
For FIPS compliance, we need to remove all uses of MD5 in favor of SHA-256 or stronger.
@jejacks0n Can we drop this functionality entirely, at least in FIPS mode (e.g. Gitlab::FIPS.enabled?
).? This may be related to #334590.