Checkmk Werk 13804: KUBE: add cmk/kubernetes/label/ to host label keys

ID: 13804 Title: KUBE: add cmk/kubernetes/label/ to host label keys Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 This fix affects users who use Kubernetes host labels. Previously, labels which are set by Kubernetes would be mapped one-to-one to Checkmk labels. This would mean that setting labels in Kubernetes could overwrite Checkmk labels, which should not be overwritten. For instance, setting the label <tt>cmk/os_family=something</tt> would incorrectly set the corresponding Checkmk label to <tt>cmk/os_family:something</tt>. With this werk, Checkmk labels are prefixed with <tt>cmk/kubernetes/label/</tt>. For example, Checkmk now sets the aforementioned label to <tt>cmk/kubernetes/label/cmk/os_family:something</tt>. User-defined rules with old host labels need to be updated.