private Logserver parseLogserver(DeployState deployState, Admin admin, Element adminE) {
        Element logserverE = XML.getChild(adminE, "logserver");
        if (logserverE == null) {
            var adminserverE = XML.getChild(adminE, "adminserver");
            logserverE = adminserverE != null ? adminserverE : adminE;
        }
        return new LogserverBuilder().build(deployState, admin, logserverE);
    }
Builds the admin model from a V2 admin XML tag.

@author vegardh
config-model/src/main/java/com/yahoo/vespa/model/builder/xml/dom/DomAdminV2Builder.java