[2.3.0] Checkmk Werk 16223 created: Deprecate automation user login via HTTP parameters

Title: Deprecate automation user login via HTTP parameters Class: feature Compatible: compat Component: wato Date: 1700383158 Edition: cre Level: 1 Version: 2.3.0b1 Checkmk offers a method to authenticate individual requests with the `_username`/`_secret` parameter. This also works for GET requests and was used for the Webapi (removed in 2.2). Having secrets in GET parameters is considered bad practice since these parameters are usually logged by webservers and web proxies. With this Werk we deprecate this authentication method. This means we now introduced a configuration option *Enable automation user authentication via HTTP parameters* to enable/disable this method. By default it is enabled to not interrupt existing workflows. In Checkmk 2.4 we will disable this by default so it will still be possible to enable this. In Checkmk 2.5 this method will be removed entirely. If you currently use this method we recommend to switch to Basic Authentication.