JMS Bridge parameters are optional in schema, runtime makes them required

From AMQ XSD: <xs:attribute name="quality-of-service" use="optional">

At runtime:

09:10:41,213 INFO [org.jboss.as] (MSC service thread 1-7) WFLYSRV0049: WildFly Core 2.0.0.CR7 "Kenny" starting
09:10:44,070 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool – 20) WFLYCTL0013: Operation ("add") failed - address: ([
("subsystem" => "messaging-activemq"),
("jms-bridge" => "a-to-c-bridge")
]) - failure description: "WFLYCTL0155: quality-of-service may not be null"
09:10:44,111 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) "WFLYCTL0193: Failed executing subsystem messaging-activemq boot operations"
09:10:44,114 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("parallel-subsystem-boot") failed - address: ([]) - failure description: "\"WFLYCTL0193: Failed executing subsystem messaging-activemq boot operations\""
09:10:44,118 FATAL [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0056: Server boot has failed in an unrecoverable manner; exiting. See previous messages for details.