Make DomainAuthorizer a discoverable Plugin

cdstar-auth/src/main/java/de/gwdg/cdstar/auth/realm/DomainAuthorizer.java

@@ -15,6 +15,7 @@ import de.gwdg.cdstar.auth.StringPermission;
 import de.gwdg.cdstar.auth.simple.QName;
 import de.gwdg.cdstar.runtime.Config;
 import de.gwdg.cdstar.runtime.ConfigException;
+import de.gwdg.cdstar.runtime.Plugin;
 
 /**
  * An {@link Authorizer} and {@link GroupResolver} that grants statically
@@ -22,6 +23,7 @@ import de.gwdg.cdstar.runtime.ConfigException;
  * of a realm domain. It is designed to authorize principals from other realms,
  * for example LDAP.
  */
+@Plugin
 public class DomainAuthorizer implements Authorizer, GroupResolver {
 	private static final Logger log = LoggerFactory.getLogger(DomainAuthorizer.class);