Fix "ERR value is not an integer or out of range" errors
ActiveSupport::Cache::RedisCacheStore is not compatible with the
version of Rack Attack we are using (v4.4.1) per
https://github.com/kickstarter/rack-attack/issues/281. Users that had
rate limits enabled might see Redis::CommandError: ERR value is not an integer or out of range because the raw parameter wasn't passed along
properly. As a result, the Rack Attack entry would be stored as an
ActiveSupport::Cache::Entry instead of a raw string holding an integer
value.
Let's partially revert the change in
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30966 to use the
original cache store until we can update to Rack Attack v5.2.3 that has
support for ActiveSupport::Cache::RedisCacheStore via
https://github.com/kickstarter/rack-attack/pull/350.