Apply rate limiting to login pages/portals

>Draft CIS Benchmark 1.1.9

## Description
Login pages should be rate limited to increase resiliency against brute force attempts. This is configured via the following parameters: limit\_req limit\_req\_zone Can further be combined with either the default 'limit\_req' and 'limit\_req\_zone' configurations, or have additional (further limited) values for these login portals

## Rationale
Limits the rate of attack on forms that provide system logon capabilities

## Remediation
None provided

## Audit
None provided