private List<Configserver> parseConfigservers(DeployState deployState, Admin admin, Element adminE) {
        List<Configserver> configservers;
        if (multitenant)
            configservers = getConfigServersFromSpec(deployState, admin);
        else
            configservers = getConfigServers(deployState, admin, adminE);
        if (configservers.isEmpty() && ! multitenant)
            configservers = createSingleConfigServer(deployState, admin);
        if (configservers.size() % 2 == 0)
            deployState.getDeployLogger().logApplicationPackage(Level.WARNING,
                                                                "An even number (" + configservers.size() +
                                                                ") of config servers have been configured. " +
                                                                "This is discouraged, see doc for configuration server ");
        return configservers;
    }
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