Support of X-HTTP-Method-Override: PATCH

Per Supporting Clients Lacking PATCH:

Some clients, like IE8, lack support for HTTP’s PATCH method. API servers that wish to support these clients are recommended to treat POST requests as PATCH requests if the client includes the X-HTTP-Method-Override: PATCH header. This allows clients that lack PATCH support to have their update requests honored, simply by adding the header

Currently the ruleset does not take this method into consideration when checking POST and PATCH routes.