Checkmk Werk 13864: Host registration: Enable on sites with disabled Setup & check site name

ID: 13864 Title: Host registration: Enable on sites with disabled Setup & check site name Component: Setup Level: 1 Class: Bug fix Version: 2.2.0i1 The host registration via the <tt>cmk-agent-ctl</tt> command failed for sites with disabled Setup. Furthermore, upon registration, we now check if the site where the host is registering is also the site on which it is monitored (only relevant in distributed setups). If not, the registration fails. Finally, upon registration we also ensure that the host is not a cluster host, since cluster hosts have no direct physical or virtual counterpart which needs to be registered.